ASTROSAT CZTI

Data Quality Report

Orbit 54430

Creation date: 2025-10-20T13:13:07.445138
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_54430cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54430cztM0_level2_quad_clean.evt
Size (bytes)612,452,16090,046,080
Size584.1 MB 85.9 MB
Events in quadrant A3,001,338646,274
Events in quadrant B2,989,034699,947
Events in quadrant C4,810,597571,314
Events in quadrant D11,348,623340,886

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140762
B0140572
C0194022
D0383332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6708370.551580%
B6708520.775194%
C67086169.183065%
D6708298844.543828%

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 7823 6709 15 15 0.19% 0.22%
B 7823 6709 4 4 0.05% 0.06%
C 7823 6709 574 574 7.34% 8.56%
D 7823 6709 2843 2843 36.34% 42.38%

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 137719 773.56 710 692 177.1
A 11 3 45183 251.17 710 692 177.1
A 4 3 23385 128.11 710 692 177.1
B 10 247 55270 361.56 703 679 151.0
B 0 213 53672 350.98 703 679 151.0
B 0 171 31350 203.13 703 679 151.0
C 1 241 1233244 6855.15 654 649 179.8
C 13 3 555944 3088.31 654 649 179.8
C 12 249 164897 913.47 654 649 179.8
D 8 176 6881537 47574.05 504 482 144.6
D 15 108 1263144 8729.76 504 482 144.6
D 7 70 729400 5039.57 504 482 144.6

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