ASTROSAT CZTI

Data Quality Report

Orbit 20170730_G07_016T01_9000001420_level2

Creation date: 2025-11-15T17:10:26.747238
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/AS1G07_016T01_9000001420cztM0_level2.fits modeM0/AS1G07_016T01_9000001420cztM0_level2_quad_clean.evt
Size (bytes)707,454,720663,491,520
Size674.7 MB 632.8 MB
Events in quadrant A4,264,0823,883,372
Events in quadrant B4,109,2823,864,971
Events in quadrant C4,241,4763,779,625
Events in quadrant D3,535,5703,293,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015780
B015920
C015620
D015740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01628420
B01695140
C01576920
D02154010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01310
C01320
D01310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7690611041.435519%
B7684114521.889616%
C769856860.891083%
D7656636214.729253%

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 92448 78122 0 0 0.00% 0.00%
B 92449 78008 0 0 0.00% 0.00%
C 92449 78141 0 0 0.00% 0.00%
D 92449 77752 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 4200 11.25 1110 1037 281.3
A 7 110 3470 8.65 1110 1037 281.3
A 0 30 3276 7.96 1110 1037 281.3
B 2 9 3608 12.02 1087 1035 214.1
B 14 254 2779 8.15 1087 1035 214.1
B 3 17 2772 8.11 1087 1035 214.1
C 1 80 3113 7.06 1120 1036 294.2
C 1 81 3109 7.05 1120 1036 294.2
C 12 241 3010 6.71 1120 1036 294.2
D 3 14 2655 6.45 1007 913 270.1
D 10 189 2609 6.28 1007 913 270.1
D 6 231 2564 6.11 1007 913 270.1

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