ASTROSAT CZTI

Data Quality Report

Orbit 56591

Creation date: 2026-03-14T21:57:25.331343
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_083T06_9000006558_56591cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56591cztM0_level2_quad_clean.evt
Size (bytes)478,186,56088,842,240
Size456.0 MB 84.7 MB
Events in quadrant A7,013,043532,132
Events in quadrant B2,938,462637,760
Events in quadrant C2,734,600578,543
Events in quadrant D4,546,206520,334

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252051
B0130681
C0128531
D0178011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A603490715.031488%
B6033600.994530%
C6033530.878502%
D60344226.993702%

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 6984 6034 727 727 10.41% 12.05%
B 6983 6033 5 5 0.07% 0.08%
C 6983 6033 17 17 0.24% 0.28%
D 6984 6034 391 391 5.60% 6.48%

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 7 64 2999967 19157.65 625 608 156.6
A 4 95 752591 4803.1 625 608 156.6
A 13 248 340131 2168.62 625 608 156.6
B 5 185 117608 834.75 648 626 140.1
B 4 21 102402 726.25 648 626 140.1
B 4 206 80332 568.76 648 626 140.1
C 12 252 85335 479.56 632 624 176.6
C 6 223 65783 368.87 632 624 176.6
C 13 3 60116 336.79 632 624 176.6
D 2 31 624370 3489.83 621 594 178.7
D 6 239 539680 3016.02 621 594 178.7
D 2 249 288591 1611.25 621 594 178.7

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