ASTROSAT CZTI

Data Quality Report

Orbit 20151120_T01_001T01_9000000110_level2

Creation date: 2025-10-23T14:58:34.125326
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/AS1T01_001T01_9000000110cztM0_level2.fits modeM0/AS1T01_001T01_9000000110cztM0_level2_quad_clean.evt
Size (bytes)100,854,720129,890,880
Size96.2 MB 123.9 MB
Events in quadrant A569,786803,694
Events in quadrant B572,488806,805
Events in quadrant C565,512764,905
Events in quadrant D487,258698,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549590
B0560620
C0524950
D0514550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124241881.513200%
B124241411.134900%
C12424550.442692%
D124241381.110753%

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 12488 12423 0 0 0.00% 0.00%
B 12488 12423 0 0 0.00% 0.00%
C 12489 12424 0 0 0.00% 0.00%
D 12489 12424 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 29 522 10.16 148 138 37.8
A 7 110 493 9.39 148 138 37.8
A 14 188 411 7.22 148 138 37.8
B 2 9 456 10.38 151 143 30.1
B 5 128 401 8.56 151 143 30.1
B 2 8 370 7.53 151 143 30.1
C 12 241 402 6.72 149 138 39.3
C 9 242 365 5.78 149 138 39.3
C 3 235 356 5.55 149 138 39.3
D 6 44 386 7.22 139 127 35.9
D 3 14 372 6.83 139 127 35.9
D 6 231 340 5.94 139 127 35.9

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