ASTROSAT CZTI

Data Quality Report

Orbit 20191020_A07_130T01_9000003246_level2

Creation date: 2025-12-04T19:30:11.938844
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_130T01_9000003246cztM0_level2.fits modeM0/AS1A07_130T01_9000003246cztM0_level2_quad_clean.evt
Size (bytes)603,192,960531,895,680
Size575.2 MB 507.3 MB
Events in quadrant A3,739,6443,110,933
Events in quadrant B3,564,0383,134,777
Events in quadrant C3,637,6683,001,893
Events in quadrant D3,169,9102,703,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01267010
B01326230
C01262830
D01487770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012340
B012340
C012340
D012340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A605945200.858171%
B6059411771.942437%
C605948101.336766%
D6059421953.622471%

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 69119 60586 0 0 0.00% 0.00%
B 69119 60563 0 0 0.00% 0.00%
C 69119 60585 0 0 0.00% 0.00%
D 69119 60569 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 3511 10.89 973 913 238.6
A 7 110 2973 8.64 973 913 238.6
A 0 30 2739 7.65 973 913 238.6
B 2 9 2774 10.17 939 897 184.6
B 2 8 2404 8.17 939 897 184.6
B 5 128 2330 7.76 939 897 184.6
C 12 241 2535 6.65 960 897 246.1
C 3 234 2523 6.61 960 897 246.1
C 3 126 2453 6.32 960 897 246.1
D 3 14 2298 6.16 904 823 239.4
D 6 231 2246 5.94 904 823 239.4
D 10 189 2199 5.75 904 823 239.4

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