ASTROSAT CZTI

Data Quality Report

Orbit 20191205_A08_007T01_9000003362_level2

Creation date: 2019-12-14T23:49:07.168550
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A08_007T01_9000003362cztM0_level2_bc.evt modeM0/AS1A08_007T01_9000003362cztM0_level2_quad_clean.evt
Size (bytes)22,115,727,3608,136,164,160
Size20.6 GB 7.6 GB
Events in quadrant A126,397,31552,993,404
Events in quadrant B139,006,99653,395,621
Events in quadrant C122,851,92151,146,219
Events in quadrant D242,106,85749,240,094

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118060
B0118060
C0118060
D0118060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012090330
B012536940
C012176500
D016169370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09490
B09510
C09510
D09500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57945653680.926386%
B57944473391.266559%
C57945687641.512453%
D579432320115.524548%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 682120 579544 22 22 0.00% 0.00%
B 682120 579533 142 142 0.02% 0.02%
C 682120 579538 83 83 0.01% 0.01%
D 682120 579498 6421 6421 0.94% 1.11%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 985404 137.06 32341 31812 6957.3
A 11 47 421582 56.02 32341 31812 6957.3
A 10 17 306597 39.5 32341 31812 6957.3
B 0 190 2289597 376.66 32365 31710 5994.6
B 0 219 2279205 374.92 32365 31710 5994.6
B 0 230 2061694 338.64 32365 31710 5994.6
C 10 22 2024489 274.16 30978 30960 7271.4
C 9 54 403708 51.26 30978 30960 7271.4
C 10 23 308330 38.15 30978 30960 7271.4
D 1 52 49378045 6769.4 31298 30317 7289.8
D 7 238 21847097 2992.77 31298 30317 7289.8
D 12 227 11777945 1611.51 31298 30317 7289.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter