ASTROSAT CZTI

Data Quality Report

Orbit 10956

Creation date: 2024-06-27T16:06:13.291896
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/AS1T01_193T01_9000001590_10956cztM0_level2.evt modeM0/AS1T01_193T01_9000001590_10956cztM0_level2_quad_clean.evt
Size (bytes)921,404,160171,809,280
Size878.7 MB 163.9 MB
Events in quadrant A8,145,7841,112,726
Events in quadrant B7,222,0021,139,241
Events in quadrant C4,888,2311,146,449
Events in quadrant D6,938,4311,076,733

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309813
B0280948
C0214102
D0271362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105097987.593491%
B105087046.699657%
C10509480.456751%
D105095044.795889%

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 13064 10510 514 514 3.93% 4.89%
B 13064 10511 405 405 3.10% 3.85%
C 13064 10511 0 0 0.00% 0.00%
D 13064 10511 299 299 2.29% 2.84%

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 8 5 2892810 11360.92 1276 1253 254.5
A 8 15 290610 1136.88 1276 1253 254.5
A 11 29 26038 97.38 1276 1253 254.5
B 4 239 1951573 8256.73 1272 1245 236.2
B 4 173 193502 813.92 1272 1245 236.2
B 0 214 56357 233.32 1272 1245 236.2
C 13 61 9306 28.37 1251 1260 283.6
C 8 222 4686 12.08 1251 1260 283.6
C 14 128 4542 11.57 1251 1260 283.6
D 1 52 524013 1799.28 1226 1195 290.6
D 10 253 516806 1774.48 1226 1195 290.6
D 8 195 302679 1037.56 1226 1195 290.6

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