ASTROSAT CZTI

Data Quality Report

Orbit 20191124_A07_144T02_9000003340_level2

Creation date: 2025-12-06T11:35:02.198192
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_144T02_9000003340cztM0_level2.fits modeM0/AS1A07_144T02_9000003340cztM0_level2_quad_clean.evt
Size (bytes)1,805,817,6001,658,928,960
Size1.7 GB 1.5 GB
Events in quadrant A12,648,78411,147,946
Events in quadrant B12,119,26211,237,924
Events in quadrant C5,137,6824,096,282
Events in quadrant D10,688,8389,724,985

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03190
B03190
C03190
D03180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041780
B041780
C041780
D041780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04302940
B04421500
C02987480
D05347640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20488622021.074744%
B20488632621.592105%
C20471612286060.014850%
D20487885784.186882%

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 236990 204862 0 0 0.00% 0.00%
B 236990 204854 0 0 0.00% 0.00%
C 236990 83607 0 0 0.00% 0.00%
D 236990 204716 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 11978 10.83 3292 3072 822.1
A 7 110 10000 8.43 3292 3072 822.1
A 9 19 9446 7.75 3292 3072 822.1
B 2 9 9616 10.56 3201 3053 621.5
B 2 8 8102 8.12 3201 3053 621.5
B 3 17 8038 8.02 3201 3053 621.5
C 3 126 3482 6.4 1357 1267 346.3
C 9 209 3464 6.34 1357 1267 346.3
C 3 234 3453 6.31 1357 1267 346.3
D 3 14 7574 5.97 3052 2782 802.3
D 10 189 7477 5.85 3052 2782 802.3
D 15 46 7461 5.83 3052 2782 802.3

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