ASTROSAT CZTI

Data Quality Report

Orbit 23390

Creation date: 2024-06-27T18:53:41.315152
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/AS1A07_138T09_9000003458_23390cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23390cztM0_level2_quad_clean.evt
Size (bytes)824,808,960150,102,720
Size786.6 MB 143.1 MB
Events in quadrant A5,061,829987,571
Events in quadrant B5,636,3051,004,321
Events in quadrant C6,522,969944,531
Events in quadrant D7,072,564907,306

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02208
B022014
C022014
D02198

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243
B0241
C0232
D0252

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022131980
B0239631052
C0265311058
D0293011674

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101571021.004234%
B101411971.942609%
C101273303.258616%
D100906276.214073%

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 13126 10289 0 0 0.00% 0.00%
B 13106 10278 80 80 0.61% 0.78%
C 13126 10279 138 138 1.05% 1.34%
D 13120 10232 512 512 3.90% 5.00%

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 15472 54.93 1313 1285 258.3
A 0 226 11635 40.07 1313 1285 258.3
A 3 137 10677 36.36 1313 1285 258.3
B 4 200 290305 1208.93 1291 1265 239.1
B 0 190 182987 760.07 1291 1265 239.1
B 0 189 81149 334.12 1291 1265 239.1
C 10 9 1436432 5084.74 1241 1251 282.3
C 14 238 200848 707.16 1241 1251 282.3
C 7 247 18998 62.88 1241 1251 282.3
D 1 52 2282548 7823.49 1233 1199 291.6
D 12 233 57422 192.81 1233 1199 291.6
D 2 234 39619 131.75 1233 1199 291.6

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