ASTROSAT CZTI

Data Quality Report

Orbit 39875

Creation date: 2024-06-27T22:09:45.944567
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/AS1A12_032T03_9000005502_39875cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39875cztM0_level2_quad_clean.evt
Size (bytes)688,207,680180,095,040
Size656.3 MB 171.8 MB
Events in quadrant A6,398,6581,189,119
Events in quadrant B5,983,6771,234,754
Events in quadrant C5,609,9191,183,237
Events in quadrant D6,623,8541,079,238

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259254
B0253613
C0234853
D0274913

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110812222.003429%
B110811010.911470%
C11081400.360978%
D110812582.328310%

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 15290 11084 158 158 1.03% 1.43%
B 15290 11084 54 54 0.35% 0.49%
C 15290 11084 29 29 0.19% 0.26%
D 15290 11084 253 253 1.65% 2.28%

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 10 83 938234 3777.54 1215 1192 248.1
A 14 250 548708 2207.22 1215 1192 248.1
A 13 248 64427 254.92 1215 1192 248.1
B 0 183 290770 1238.36 1221 1187 233.8
B 4 170 174530 741.28 1221 1187 233.8
B 0 190 137282 581.99 1221 1187 233.8
C 15 214 462063 1639.43 1202 1210 281.1
C 14 254 155903 550.3 1202 1210 281.1
C 15 208 123884 436.4 1202 1210 281.1
D 1 47 480631 1656.77 1188 1157 289.4
D 13 249 272081 936.15 1188 1157 289.4
D 13 171 244423 840.58 1188 1157 289.4

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