ASTROSAT CZTI

Data Quality Report

Orbit 56623

Creation date: 2026-03-17T02:10:08.315825
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_56623cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56623cztM0_level2_quad_clean.evt
Size (bytes)424,431,36094,538,880
Size404.8 MB 90.2 MB
Events in quadrant A3,994,396598,087
Events in quadrant B3,791,341679,907
Events in quadrant C3,215,027596,505
Events in quadrant D4,213,039541,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166222
B0156992
C0142392
D0171502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63924386.852315%
B63921842.878598%
C6392721.126408%
D63922844.443054%

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 7597 6393 389 389 5.12% 6.08%
B 7597 6393 90 90 1.18% 1.41%
C 7597 6393 66 66 0.87% 1.03%
D 7597 6393 225 225 2.96% 3.52%

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 4 95 1107735 6571.83 679 661 168.5
A 4 249 83697 492.92 679 661 168.5
A 3 62 75604 444.88 679 661 168.5
B 0 231 240626 1637.04 687 664 146.6
B 5 185 229020 1557.87 687 664 146.6
B 0 213 155014 1052.99 687 664 146.6
C 9 38 193802 1069.87 660 652 180.5
C 1 16 141876 782.25 660 652 180.5
C 6 223 106679 587.29 660 652 180.5
D 6 239 758947 4099.64 645 615 185.0
D 2 249 404362 2182.71 645 615 185.0
D 7 96 214975 1158.86 645 615 185.0

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