ASTROSAT CZTI

Data Quality Report

Orbit 39477

Creation date: 2024-06-27T22:05:05.464633
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/AS1C06_010T05_9000005484_39477cztM0_level2.fits modeM0/AS1C06_010T05_9000005484_39477cztM0_level2_quad_clean.evt
Size (bytes)923,040,000205,660,800
Size880.3 MB 196.1 MB
Events in quadrant A7,272,3771,422,182
Events in quadrant B5,590,1861,494,936
Events in quadrant C9,241,0311,328,297
Events in quadrant D11,110,8131,130,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292232
B0256332
C0357932
D0414002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123161220.990581%
B12316480.389737%
C123169107.388763%
D12316168613.689510%

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 16473 12318 111 111 0.67% 0.90%
B 16473 12318 13 13 0.08% 0.11%
C 16473 12318 842 842 5.11% 6.84%
D 16473 12318 1340 1340 8.13% 10.88%

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 15 222 901239 3395.53 1319 1291 265.0
A 10 83 795435 2996.33 1319 1291 265.0
A 15 174 436949 1643.75 1319 1291 265.0
B 8 3 213988 862.03 1331 1297 246.7
B 0 199 48643 191.89 1331 1297 246.7
B 5 172 43285 170.18 1331 1297 246.7
C 9 187 2286767 8011.23 1245 1252 285.3
C 15 208 1586006 5554.91 1245 1252 285.3
C 15 214 483365 1689.91 1245 1252 285.3
D 2 249 3384175 11619.24 1206 1171 291.2
D 12 227 1550807 5322.37 1206 1171 291.2
D 12 0 640010 2194.15 1206 1171 291.2

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