ASTROSAT CZTI

Data Quality Report

Orbit 56768

Creation date: 2026-03-26T21:37:11.474914
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/AS1A14_083T05_9000006560_56768cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56768cztM0_level2_quad_clean.evt
Size (bytes)404,130,24090,017,280
Size385.4 MB 85.8 MB
Events in quadrant A3,643,461589,725
Events in quadrant B4,001,881625,493
Events in quadrant C3,781,940555,121
Events in quadrant D3,060,976531,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149561
B0160321
C0155781
D0134671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60601602.640264%
B60612434.009239%
C60612183.596766%
D60611011.666392%

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 7155 6061 59 59 0.82% 0.97%
B 7156 6062 92 92 1.29% 1.52%
C 7156 6062 197 197 2.75% 3.25%
D 7156 6062 26 26 0.36% 0.43%

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 3 14 657354 3992.32 658 640 164.5
A 10 251 326990 1983.96 658 640 164.5
A 3 62 71602 431.4 658 640 164.5
B 5 185 515038 3776.34 644 623 136.2
B 4 206 462340 3389.48 644 623 136.2
B 10 247 168410 1231.73 644 623 136.2
C 14 96 651047 3770.94 627 621 172.5
C 13 3 433761 2511.19 627 621 172.5
C 14 254 50105 286.89 627 621 172.5
D 2 249 233060 1289.12 636 607 180.3
D 2 120 60754 333.56 636 607 180.3
D 5 173 50167 274.85 636 607 180.3

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