ASTROSAT CZTI

Data Quality Report

Orbit 20180614_G08_019T01_9000002166_level2

Creation date: 2018-06-15T10:22:35.189769
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/AS1G08_019T01_9000002166cztM0_level2_bc.evt modeM0/AS1G08_019T01_9000002166cztM0_level2_quad_clean.evt
Size (bytes)1,099,267,200301,000,320
Size1.0 GB 287.1 MB
Events in quadrant A9,833,4231,860,819
Events in quadrant B5,407,0081,869,663
Events in quadrant C9,710,8221,806,773
Events in quadrant D6,594,1911,818,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0668330
B0532600
C0707750
D0570040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05180
B05180
C05180
D05180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256063311.292666%
B256062550.995860%
C256062100.820120%
D256063511.370772%

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 28457 25602 1 1 0.00% 0.00%
B 28457 25603 3 3 0.01% 0.01%
C 28457 25605 0 0 0.00% 0.00%
D 28457 25604 26 26 0.09% 0.10%

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 0 253 2851438 10030.68 1277 1250 284.1
A 0 23 1633503 5744.4 1277 1250 284.1
A 1 162 136765 476.92 1277 1250 284.1
B 4 173 71059 280.84 1282 1245 248.6
B 0 205 70008 276.61 1282 1245 248.6
B 0 214 54100 212.62 1282 1245 248.6
C 3 233 4810604 17700.05 1230 1211 271.7
C 3 234 42390 151.55 1230 1211 271.7
C 9 54 35739 127.07 1230 1211 271.7
D 12 110 663221 2206.97 1257 1219 300.0
D 13 122 290396 964.05 1257 1219 300.0
D 5 222 245759 815.24 1257 1219 300.0

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