ASTROSAT CZTI

Data Quality Report

Orbit 56127

Creation date: 2026-02-11T21:36:11.231526
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_083T03_9000006548_56127cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56127cztM0_level2_quad_clean.evt
Size (bytes)2,795,883,840526,132,800
Size2.6 GB 501.8 MB
Events in quadrant A28,620,9793,260,957
Events in quadrant B19,670,3693,761,219
Events in quadrant C30,102,6463,218,933
Events in quadrant D22,184,3433,094,278

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01122597
B0849457
C01160557
D0939468

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07680
B07680
C07680
D07680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3775936529.671866%
B377599822.600704%
C3775924896.591806%
D3775815103.999152%

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 41799 37763 2757 2757 6.60% 7.30%
B 41799 37764 252 252 0.60% 0.67%
C 41799 37762 1424 1424 3.41% 3.77%
D 41798 37763 983 983 2.35% 2.60%

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 12 115 7312429 7522.17 3932 3831 971.6
A 7 64 2569258 2640.39 3932 3831 971.6
A 15 32 992596 1017.66 3932 3831 971.6
B 9 254 854196 1003.03 4010 3857 847.8
B 4 156 764341 897.04 4010 3857 847.8
B 4 171 579060 678.49 4010 3857 847.8
C 9 38 11023282 10508.09 3875 3837 1048.7
C 12 252 1046948 994.71 3875 3837 1048.7
C 15 148 769369 730.01 3875 3837 1048.7
D 8 240 2031270 1847.72 3901 3727 1097.3
D 2 120 1368666 1243.89 3901 3727 1097.3
D 2 249 1144813 1039.89 3901 3727 1097.3

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