ASTROSAT CZTI

Data Quality Report

Orbit 20201208_A10_057T05_9000004060_level2

Creation date: 2025-12-18T15:25:08.862384
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/AS1A10_057T05_9000004060cztM0_level2.fits modeM0/AS1A10_057T05_9000004060cztM0_level2_quad_clean.evt
Size (bytes)758,344,320631,255,680
Size723.2 MB 602.0 MB
Events in quadrant A4,788,0883,728,734
Events in quadrant B4,544,2413,611,815
Events in quadrant C4,614,5943,414,979
Events in quadrant D3,836,7333,180,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015340
C015300
D015360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01591390
B01582880
C01621620
D02399000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01770
D01770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A756107811.032932%
B755839421.246312%
C7558414351.898550%
D7543572209.571154%

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 95758 75896 0 0 0.00% 0.00%
B 95758 75862 0 0 0.00% 0.00%
C 95757 75869 0 0 0.00% 0.00%
D 95756 75440 0 0 0.00% 0.00%

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 0 29 3828 8.67 1251 1176 306.0
A 7 110 3784 8.52 1251 1176 306.0
A 9 19 3542 7.73 1251 1176 306.0
B 2 9 3678 10.74 1202 1149 235.3
B 2 8 3104 8.31 1202 1149 235.3
B 5 128 3086 8.23 1202 1149 235.3
C 1 81 3502 7.68 1218 1144 307.1
C 1 80 3501 7.68 1218 1144 307.1
C 12 241 3207 6.72 1218 1144 307.1
D 6 67 2788 6.17 1094 998 290.1
D 7 3 2698 5.86 1094 998 290.1
D 6 38 2689 5.83 1094 998 290.1

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