ASTROSAT CZTI

Data Quality Report

Orbit 20220710_T05_041T01_9000005234_level2

Creation date: 2022-07-12T14:42:01.081753
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T05_041T01_9000005234cztM0_level2_bc.evt modeM0/AS1T05_041T01_9000005234cztM0_level2_quad_clean.evt
Size (bytes)3,812,451,8401,644,071,040
Size3.6 GB 1.5 GB
Events in quadrant A20,590,52311,146,405
Events in quadrant B26,312,83711,105,721
Events in quadrant C29,451,97711,090,129
Events in quadrant D33,198,98810,507,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01805150
B02058010
C02072660
D02317630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017740
B017740
C017740
D017740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A868451700.195751%
B8684521812.511371%
C8684527493.165410%
D8684533503.857447%

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 119322 86864 15 15 0.01% 0.02%
B 119322 86845 239 239 0.20% 0.28%
C 119322 86845 959 959 0.80% 1.10%
D 119322 86844 502 502 0.42% 0.58%

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 10 83 2614880 2643.6 4462 4399 987.5
A 9 143 294945 294.23 4462 4399 987.5
A 13 6 179349 177.17 4462 4399 987.5
B 5 255 3813471 4372.38 4438 4353 871.2
B 0 189 3085601 3536.88 4438 4353 871.2
B 0 229 730862 833.94 4438 4353 871.2
C 15 214 3671563 3655.02 4378 4355 1003.3
C 1 23 3163631 3148.78 4378 4355 1003.3
C 0 10 3110764 3096.09 4378 4355 1003.3
D 2 249 2481322 2405.3 4386 4274 1029.8
D 13 249 2180902 2113.58 4386 4274 1029.8
D 12 233 1772712 1717.21 4386 4274 1029.8

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