ASTROSAT CZTI

Data Quality Report

Orbit 53808

Creation date: 2025-09-08T17:07:20.200981
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_022T04_9000006506_53808cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53808cztM0_level2_quad_clean.evt
Size (bytes)2,714,365,440183,867,840
Size2.5 GB 175.4 MB
Events in quadrant A38,719,476491,771
Events in quadrant B9,308,4091,740,123
Events in quadrant C19,689,7681,344,744
Events in quadrant D31,383,774756,843

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01275262
B0407932
C0709362
D01055092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178781319273.789014%
B178797164.004698%
C17879336818.837743%
D17879962353.822921%

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 19438 17879 12337 12337 63.47% 69.00%
B 19439 17882 154 154 0.79% 0.86%
C 19439 17882 2434 2434 12.52% 13.61%
D 19439 17881 7912 7912 40.70% 44.25%

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 3 63 32881939 116547.47 1154 1125 282.1
A 8 249 307519 1086.03 1154 1125 282.1
A 5 241 295169 1042.25 1154 1125 282.1
B 5 185 871187 2146.09 1898 1823 405.1
B 5 172 239546 586.84 1898 1823 405.1
B 10 246 183369 448.16 1898 1823 405.1
C 15 224 11013402 23029.28 1738 1721 478.2
C 12 2 609826 1271.76 1738 1721 478.2
C 1 16 249459 518.11 1738 1721 478.2
D 8 176 20721463 61606.55 1192 1140 336.3
D 1 241 2489886 7399.65 1192 1140 336.3
D 7 70 634121 1882.01 1192 1140 336.3

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