ASTROSAT CZTI

Data Quality Report

Orbit 54459

Creation date: 2025-10-22T12:12:09.892323
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_126T19_9000006518_54459cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54459cztM0_level2_quad_clean.evt
Size (bytes)550,716,48097,326,720
Size525.2 MB 92.8 MB
Events in quadrant A3,552,786671,033
Events in quadrant B3,718,951717,019
Events in quadrant C3,985,307638,355
Events in quadrant D8,591,600439,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155723
B0162072
C0168242
D0304792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6910801.157742%
B69111632.358559%
C69111361.967877%
D6911193828.042251%

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 9185 6912 36 36 0.39% 0.52%
B 9186 6913 48 48 0.52% 0.69%
C 9186 6913 111 111 1.21% 1.61%
D 9186 6912 1771 1771 19.28% 25.62%

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 8 9 609443 3339.3 736 719 182.3
A 4 3 35625 191.49 736 719 182.3
A 8 6 17278 90.84 736 719 182.3
B 5 185 355873 2288.1 729 702 155.2
B 5 172 211154 1355.79 729 702 155.2
B 0 213 105602 675.79 729 702 155.2
C 7 64 481392 2453.12 710 704 196.0
C 13 3 284232 1446.94 710 704 196.0
C 9 38 137058 695.86 710 704 196.0
D 8 176 5474522 32510.41 583 555 168.4
D 12 1 272305 1613.95 583 555 168.4
D 3 12 216017 1279.65 583 555 168.4

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