ASTROSAT CZTI

Data Quality Report

Orbit 20170415_G07_028T01_9000001166_level2

Creation date: 2025-11-11T12:10:30.893958
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_028T01_9000001166cztM0_level2.fits modeM0/AS1G07_028T01_9000001166cztM0_level2_quad_clean.evt
Size (bytes)156,628,800174,931,200
Size149.4 MB 166.8 MB
Events in quadrant A944,0481,088,206
Events in quadrant B882,8681,022,110
Events in quadrant C928,2741,050,420
Events in quadrant D804,412952,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349040
B0416950
C0349220
D0379110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17168520.302889%
B171677224.205744%
C17169400.232978%
D171682161.258155%

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 19577 17172 0 0 0.00% 0.00%
B 19577 17152 0 0 0.00% 0.00%
C 19577 17172 0 0 0.00% 0.00%
D 19577 17172 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 14 188 909 10.75 245 229 63.3
A 0 29 891 10.46 245 229 63.3
A 14 204 810 9.18 245 229 63.3
B 2 9 772 11.13 233 221 49.5
B 14 254 607 7.8 233 221 49.5
B 12 226 601 7.68 233 221 49.5
C 12 241 672 6.64 245 226 67.2
C 2 191 624 5.92 245 226 67.2
C 4 254 614 5.77 245 226 67.2
D 10 189 582 5.98 228 207 62.7
D 6 231 577 5.9 228 207 62.7
D 1 19 573 5.84 228 207 62.7

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