ASTROSAT CZTI

Data Quality Report

Orbit 52507

Creation date: 2025-06-13T02:21:18.278545
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/AS1A13_037T01_9000006476_52507cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52507cztM0_level2_quad_clean.evt
Size (bytes)978,632,64077,224,320
Size933.3 MB 73.6 MB
Events in quadrant A3,328,660706,898
Events in quadrant B11,399,512436,211
Events in quadrant C12,972,662229,563
Events in quadrant D8,016,598506,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144861
B0383301
C0430706
D0283621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6578640.972940%
B6578314247.765278%
C6577440666.991029%
D6578147022.347218%

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 7478 6578 6 6 0.08% 0.09%
B 7478 6578 2958 2958 39.56% 44.97%
C 7476 6576 3843 3843 51.40% 58.44%
D 7478 6578 1464 1464 19.58% 22.26%

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 8 249 210797 1122.82 739 721 187.1
A 11 3 87885 465.88 739 721 187.1
A 12 18 60845 321.35 739 721 187.1
B 10 44 7583624 64201.94 537 518 118.1
B 7 0 637447 5392.52 537 518 118.1
B 10 254 509032 4305.3 537 518 118.1
C 15 224 9531350 81719.22 415 410 116.6
C 4 5 1141964 9787.8 415 410 116.6
C 13 3 233617 1999.54 415 410 116.6
D 15 93 3936159 21110.71 651 625 186.4
D 2 120 576284 3087.91 651 625 186.4
D 8 176 269436 1441.93 651 625 186.4

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