ASTROSAT CZTI

Data Quality Report

Orbit 54395

Creation date: 2025-10-18T05:07:15.203264
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_54395cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54395cztM0_level2_quad_clean.evt
Size (bytes)660,700,80085,878,720
Size630.1 MB 81.9 MB
Events in quadrant A3,052,650622,760
Events in quadrant B3,265,353655,539
Events in quadrant C5,280,434528,482
Events in quadrant D12,342,317329,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140821
B0147481
C0207441
D0412971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649630.947511%
B66501321.984962%
C665081712.285714%
D6650309146.481203%

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 7504 6650 31 31 0.41% 0.47%
B 7505 6651 75 75 1.00% 1.13%
C 7505 6650 734 734 9.78% 11.04%
D 7504 6650 2905 2905 38.71% 43.68%

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 12 15 175688 1007.84 701 685 173.6
A 3 14 48085 272.98 701 685 173.6
A 3 110 22848 127.64 701 685 173.6
B 10 14 303570 2037.11 693 671 148.7
B 0 213 67751 451.14 693 671 148.7
B 5 172 21289 138.66 693 671 148.7
C 1 241 1756222 9893.07 640 635 177.5
C 13 3 247655 1392.01 640 635 177.5
C 14 254 204955 1151.38 640 635 177.5
D 8 176 7319715 47575.17 536 510 153.8
D 2 172 1122935 7295.81 536 510 153.8
D 2 62 1064603 6916.65 536 510 153.8

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