ASTROSAT CZTI

Data Quality Report

Orbit 56567

Creation date: 2026-03-13T07:50:31.938520
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_56567cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56567cztM0_level2_quad_clean.evt
Size (bytes)458,881,92094,792,320
Size437.6 MB 90.4 MB
Events in quadrant A4,347,383615,402
Events in quadrant B3,304,318690,026
Events in quadrant C3,412,208591,219
Events in quadrant D5,404,531509,570

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176611
B0145431
C0152741
D0207691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66583425.136678%
B6658821.231601%
C66582063.094022%
D665874311.159507%

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 7618 6659 255 255 3.35% 3.83%
B 7618 6659 20 20 0.26% 0.30%
C 7618 6659 171 171 2.24% 2.57%
D 7618 6659 680 680 8.93% 10.21%

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 0 8 905759 5285.22 694 681 171.2
A 4 95 332469 1937.48 694 681 171.2
A 12 3 112733 654.33 694 681 171.2
B 4 21 102475 668.86 708 682 152.2
B 4 171 74924 487.83 708 682 152.2
B 7 252 67374 438.22 708 682 152.2
C 13 3 353487 1906.61 678 671 185.0
C 9 38 202209 1089.1 678 671 185.0
C 6 223 100176 537.72 678 671 185.0
D 2 249 1181945 6514.77 636 604 181.3
D 2 31 679710 3745.08 636 604 181.3
D 8 129 518693 2857.12 636 604 181.3

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