ASTROSAT CZTI

Data Quality Report

Orbit 55208

Creation date: 2025-12-12T12:44:45.099211
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/AS1A14_022T16_9000006532_55208cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55208cztM0_level2_quad_clean.evt
Size (bytes)1,902,827,520339,289,920
Size1.8 GB 323.6 MB
Events in quadrant A12,275,2112,288,505
Events in quadrant B11,186,0242,460,231
Events in quadrant C18,766,0862,043,830
Events in quadrant D26,269,8041,754,069

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0548824
B0526714
C0740655
D0956344

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A250676252.493318%
B250675222.082419%
C2506722929.143495%
D25067483819.300275%

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 26347 25070 200 200 0.76% 0.80%
B 26347 25070 76 76 0.29% 0.30%
C 26347 25070 1649 1649 6.26% 6.58%
D 26347 25070 4084 4084 15.50% 16.29%

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 8 590938 894.16 2664 2595 658.0
A 3 45 345242 520.75 2664 2595 658.0
A 3 14 226677 340.56 2664 2595 658.0
B 2 249 232217 405.77 2633 2528 566.1
B 10 247 158550 275.63 2633 2528 566.1
B 0 182 124058 214.7 2633 2528 566.1
C 12 254 5290451 7775.8 2512 2493 680.1
C 14 254 1400368 2055.54 2512 2493 680.1
C 13 3 722777 1059.16 2512 2493 680.1
D 2 249 8573609 12893.46 2390 2285 664.8
D 11 129 4911953 7385.4 2390 2285 664.8
D 15 42 1507136 2263.68 2390 2285 664.8

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