ASTROSAT CZTI

Data Quality Report

Orbit 41396

Creation date: 2024-06-27T22:29:03.284039
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_108T01_9000005664_41396cztM0_level2.fits modeM0/AS1T05_108T01_9000005664_41396cztM0_level2_quad_clean.evt
Size (bytes)713,764,800179,804,160
Size680.7 MB 171.5 MB
Events in quadrant A5,830,2241,211,401
Events in quadrant B5,254,2561,235,614
Events in quadrant C6,691,8981,156,699
Events in quadrant D7,777,7221,066,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243134
B0233623
C0271633
D0306683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11184270.241416%
B11184400.357654%
C111843242.896996%
D111845094.551144%

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 15420 11187 4 4 0.03% 0.04%
B 15420 11187 22 22 0.14% 0.20%
C 15420 11187 293 293 1.90% 2.62%
D 15420 11187 425 425 2.76% 3.80%

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 988602 3965.16 1217 1190 249.0
A 2 79 68125 268.79 1217 1190 249.0
A 13 248 28786 110.82 1217 1190 249.0
B 5 255 287030 1230.59 1207 1173 232.3
B 0 190 169485 724.57 1207 1173 232.3
B 0 229 39550 165.21 1207 1173 232.3
C 9 54 845119 3086.87 1172 1176 273.4
C 0 10 723416 2641.72 1172 1176 273.4
C 15 214 464869 1696.04 1172 1176 273.4
D 13 249 911741 3199.08 1168 1132 284.6
D 5 222 617621 2165.8 1168 1132 284.6
D 2 249 562468 1972.04 1168 1132 284.6

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