ASTROSAT CZTI

Data Quality Report

Orbit 20200305_A07_165T01_9000003558_level2

Creation date: 2025-12-09T22:48:14.953598
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/AS1A07_165T01_9000003558cztM0_level2.fits modeM0/AS1A07_165T01_9000003558cztM0_level2_quad_clean.evt
Size (bytes)4,746,404,1605,998,273,920
Size4.4 GB 5.6 GB
Events in quadrant A29,816,47639,372,860
Events in quadrant B28,317,48039,500,262
Events in quadrant C28,615,42837,355,624
Events in quadrant D24,368,81232,835,867

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09933210
B010304360
C010363860
D013915270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096160
B096160
C096160
D096160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47663544150.926285%
B47663561951.299737%
C47663590371.896000%
D476635321916.753805%

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 553034 476627 0 0 0.00% 0.00%
B 553034 476622 0 0 0.00% 0.00%
C 553034 476611 0 0 0.00% 0.00%
D 553034 475793 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 28343 11.13 7774 7334 1887.5
A 7 110 23969 8.81 7774 7334 1887.5
A 9 19 22288 7.92 7774 7334 1887.5
B 2 9 22570 10.76 7508 7221 1426.5
B 2 8 18988 8.25 7508 7221 1426.5
B 3 80 18916 8.2 7508 7221 1426.5
C 12 241 19953 6.76 7569 7138 1895.4
C 3 126 19327 6.43 7569 7138 1895.4
C 3 187 18793 6.15 7569 7138 1895.4
D 3 14 17758 6.24 6978 6377 1823.9
D 15 46 17724 6.22 6978 6377 1823.9
D 10 189 17269 5.97 6978 6377 1823.9

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