ASTROSAT CZTI

Data Quality Report

Orbit 53804

Creation date: 2025-09-08T09:14:07.824991
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_022T04_9000006506_53804cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53804cztM0_level2_quad_clean.evt
Size (bytes)833,261,76070,997,760
Size794.7 MB 67.7 MB
Events in quadrant A14,228,782122,109
Events in quadrant B3,296,755635,006
Events in quadrant C5,562,724526,619
Events in quadrant D7,288,761444,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0464023
B0141051
C0206471
D0258361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6039502983.275377%
B60401402.317881%
C604066711.043046%
D6040128621.291391%

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 7244 6040 4942 4942 68.22% 81.82%
B 7245 6041 71 71 0.98% 1.18%
C 7245 6041 557 557 7.69% 9.22%
D 7245 6041 1184 1184 16.34% 19.60%

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 63 12241442 116217.01 419 410 105.3
A 3 78 115784 1095.37 419 410 105.3
A 5 241 85290 805.86 419 410 105.3
B 5 185 641610 4644.35 644 621 138.0
B 8 234 45575 325.72 644 621 138.0
B 0 213 27070 191.64 644 621 138.0
C 15 224 2578893 15401.83 607 603 167.4
C 12 2 156259 929.84 607 603 167.4
C 12 249 133782 795.57 607 603 167.4
D 8 176 2122524 12919.2 566 540 164.3
D 1 241 1998115 12161.76 566 540 164.3
D 7 70 188295 1143.1 566 540 164.3

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