ASTROSAT CZTI

Data Quality Report

Orbit 54533

Creation date: 2025-10-27T11:12:59.582029
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_127T09_9000006520_54533cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54533cztM0_level2_quad_clean.evt
Size (bytes)539,087,040102,539,520
Size514.1 MB 97.8 MB
Events in quadrant A3,611,678683,166
Events in quadrant B3,941,730726,793
Events in quadrant C6,903,806594,309
Events in quadrant D4,940,633600,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161212
B0169222
C0255652
D0197964

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71801191.657382%
B71802082.896936%
C718085011.838440%
D71792393.329154%

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 8015 7181 94 94 1.17% 1.31%
B 8015 7181 88 88 1.10% 1.23%
C 8015 7180 775 775 9.67% 10.79%
D 8014 7180 287 287 3.58% 4.00%

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 4 249 468875 2425.0 774 756 193.0
A 13 248 65613 335.98 774 756 193.0
A 4 3 34615 175.4 774 756 193.0
B 5 185 272716 1618.66 767 738 168.0
B 10 14 259249 1538.52 767 738 168.0
B 2 249 98489 581.76 767 738 168.0
C 4 5 1959760 9874.81 721 713 198.4
C 12 252 1705271 8592.03 721 713 198.4
C 13 3 110394 552.86 721 713 198.4
D 2 172 1346125 6438.33 738 705 209.0
D 8 160 199613 951.85 738 705 209.0
D 3 144 105827 503.05 738 705 209.0

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