ASTROSAT CZTI

Data Quality Report

Orbit 54761

Creation date: 2025-11-11T22:45:52.924471
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_103T01_9000006524_54761cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54761cztM0_level2_quad_clean.evt
Size (bytes)1,027,572,480175,720,320
Size980.0 MB 167.6 MB
Events in quadrant A5,517,7611,274,418
Events in quadrant B15,223,1791,017,075
Events in quadrant C8,972,0311,106,901
Events in quadrant D7,424,4901,118,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252072
B0532972
C0349262
D0302082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116222342.013423%
B11623353030.370816%
C1162211309.722939%
D116224323.717088%

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 13552 11624 94 94 0.69% 0.81%
B 13553 11625 3006 3006 22.18% 25.86%
C 13552 11624 902 902 6.66% 7.76%
D 13552 11624 334 334 2.46% 2.87%

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 5 240 132820 384.75 1333 1303 341.8
A 0 8 101017 291.71 1333 1303 341.8
A 4 3 44598 126.66 1333 1303 341.8
B 2 249 9458786 39046.68 1122 1089 242.2
B 0 213 411506 1694.43 1122 1089 242.2
B 5 185 286734 1179.3 1122 1089 242.2
C 4 5 2549175 7273.18 1232 1221 350.3
C 13 3 743162 2117.88 1232 1221 350.3
C 12 252 337416 959.67 1232 1221 350.3
D 3 12 800057 2128.36 1276 1221 375.3
D 11 129 653338 1737.45 1276 1221 375.3
D 6 239 301507 800.06 1276 1221 375.3

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