ASTROSAT CZTI

Data Quality Report

Orbit 55040

Creation date: 2025-12-01T10:57:05.827015
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_025T01_9000006530_55040cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55040cztM0_level2_quad_clean.evt
Size (bytes)690,793,92072,593,280
Size658.8 MB 69.2 MB
Events in quadrant A5,327,359530,318
Events in quadrant B3,007,427633,854
Events in quadrant C2,971,089557,418
Events in quadrant D13,801,75160,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01994726
B0133025
C0132543
D04513871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595765611.012254%
B59601031.728188%
C5960641.073826%
D5952536090.053763%

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 7102 5963 440 440 6.20% 7.38%
B 7102 5963 43 43 0.61% 0.72%
C 7101 5962 42 42 0.59% 0.70%
D 7101 5957 4394 4394 61.88% 73.76%

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 15 32 1521511 9960.35 615 601 152.7
A 3 95 729788 4775.4 615 601 152.7
A 0 8 604258 3953.31 615 601 152.7
B 5 236 133245 946.64 644 619 140.1
B 4 81 122121 867.24 644 619 140.1
B 5 185 120570 856.17 644 619 140.1
C 13 3 176007 1001.28 633 628 175.2
C 6 223 128022 727.32 633 628 175.2
C 12 252 79074 447.87 633 628 175.2
D 15 94 9631263 133040.63 241 229 72.4
D 11 129 2058318 28429.91 241 229 72.4
D 15 93 428901 5921.56 241 229 72.4

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