ASTROSAT CZTI

Data Quality Report

Orbit 56493

Creation date: 2026-03-08T08:28:37.047071
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_060T01_9000006556_56493cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56493cztM0_level2_quad_clean.evt
Size (bytes)431,660,16099,584,640
Size411.7 MB 95.0 MB
Events in quadrant A4,480,837636,924
Events in quadrant B3,301,308717,132
Events in quadrant C3,282,200627,840
Events in quadrant D4,395,671567,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179442
B0144312
C0146622
D0177362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66732573.851341%
B6673761.138918%
C66731101.648434%
D66732934.390829%

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 7823 6674 216 216 2.76% 3.24%
B 7823 6674 23 23 0.29% 0.34%
C 7823 6673 58 58 0.74% 0.87%
D 7823 6674 257 257 3.29% 3.85%

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 979084 5446.89 730 711 179.6
A 3 14 206037 1143.11 730 711 179.6
A 0 8 123518 683.7 730 711 179.6
B 4 206 109020 685.19 739 712 158.1
B 4 190 34218 211.97 739 712 158.1
B 0 213 28309 174.59 739 712 158.1
C 13 3 216756 1089.49 722 715 198.3
C 6 223 124058 622.02 722 715 198.3
C 15 230 35438 175.11 722 715 198.3
D 11 176 701055 3505.71 703 672 199.8
D 2 249 334292 1669.91 703 672 199.8
D 3 12 211114 1053.35 703 672 199.8

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