ASTROSAT CZTI

Data Quality Report

Orbit 56538

Creation date: 2026-03-11T08:58:25.666755
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_56538cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56538cztM0_level2_quad_clean.evt
Size (bytes)446,120,640101,384,640
Size425.5 MB 96.7 MB
Events in quadrant A3,806,653665,363
Events in quadrant B4,328,080696,691
Events in quadrant C3,685,252633,593
Events in quadrant D4,151,239588,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161462
B0173852
C0161003
D0171872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6980891.275072%
B69803725.329513%
C69791732.478865%
D69791482.120648%

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 7905 6981 57 57 0.72% 0.82%
B 7905 6981 219 219 2.77% 3.14%
C 7904 6980 143 143 1.81% 2.05%
D 7904 6980 121 121 1.53% 1.73%

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 315957 1672.94 765 746 188.4
A 13 153 252636 1336.87 765 746 188.4
A 4 249 105341 555.12 765 746 188.4
B 5 185 790002 4889.05 755 726 161.4
B 0 171 187320 1155.83 755 726 161.4
B 10 246 78969 484.66 755 726 161.4
C 12 252 446681 2183.83 747 740 204.2
C 14 254 127519 620.85 747 740 204.2
C 6 223 121814 592.92 747 740 204.2
D 2 249 540744 2567.49 740 707 210.3
D 12 218 196640 931.52 740 707 210.3
D 8 129 195438 925.81 740 707 210.3

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