ASTROSAT CZTI

Data Quality Report

Orbit 59239

Creation date: 2026-09-09T12:41:14.161963
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_271T01_9000006604_59239cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59239cztM0_level2_quad_clean.evt
Size (bytes)275,578,56041,483,520
Size262.8 MB 39.6 MB
Events in quadrant A1,588,787296,411
Events in quadrant B1,913,275314,182
Events in quadrant C1,643,281291,943
Events in quadrant D4,830,508148,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109564310
B0136005913
C0110904239
D0258789632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141
B0142
C0142
D0153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09842
B09535
C09531
D09537

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2907752.579979%
B28891294.465213%
C2917682.331162%
D2774131747.476568%

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 7054 3062 27 27 0.38% 0.88%
B 7446 3036 44 44 0.59% 1.45%
C 7451 3070 27 27 0.36% 0.88%
D 7442 2873 1179 1179 15.84% 41.04%

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 10 251 110361 1269.79 349 341 86.6
A 0 24 71661 823.14 349 341 86.6
A 15 233 44366 508.11 349 341 86.6
B 2 247 452633 6093.41 341 328 74.2
B 4 201 31893 425.24 341 328 74.2
B 4 236 29123 387.92 341 328 74.2
C 10 22 92085 951.09 346 342 96.5
C 15 147 90555 935.23 346 342 96.5
C 5 250 39081 401.6 346 342 96.5
D 12 110 3451557 44495.99 271 258 77.6
D 11 129 192038 2472.53 271 258 77.6
D 12 2 46507 596.27 271 258 77.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct