ASTROSAT CZTI

Data Quality Report

Orbit 20210612_A10_071T46_9000004460_level2

Creation date: 2025-12-26T21:49:26.544152
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_071T46_9000004460cztM0_level2.fits modeM0/AS1A10_071T46_9000004460cztM0_level2_quad_clean.evt
Size (bytes)749,272,320577,005,120
Size714.6 MB 550.3 MB
Events in quadrant A4,803,1523,375,418
Events in quadrant B4,152,0122,884,233
Events in quadrant C4,532,5343,137,334
Events in quadrant D4,012,4142,890,971

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600110
B03814540
C01691970
D01800790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015360
B015360
C015360
D015360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7559913861.833358%
B755991752623.182846%
C7559923433.099247%
D7559914301.891559%

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 87019 75587 0 0 0.00% 0.00%
B 87019 75584 0 0 0.00% 0.00%
C 87019 75587 0 0 0.00% 0.00%
D 87019 75589 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 3903 8.99 1248 1171 303.9
A 7 110 3780 8.58 1248 1171 303.9
A 9 19 3535 7.78 1248 1171 303.9
B 2 9 3327 10.6 1097 1047 215.0
B 5 232 2846 8.37 1097 1047 215.0
B 3 80 2798 8.14 1097 1047 215.0
C 12 241 3140 6.67 1199 1120 302.9
C 3 187 3051 6.38 1199 1120 302.9
C 9 209 3043 6.35 1199 1120 302.9
D 6 231 2912 6.05 1147 1042 309.0
D 3 14 2887 5.97 1147 1042 309.0
D 15 47 2832 5.79 1147 1042 309.0

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