ASTROSAT CZTI

Data Quality Report

Orbit 58071

Creation date: 2026-06-22T14:11:05.040892
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_031T01_9000006584_58071cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58071cztM0_level2_quad_clean.evt
Size (bytes)1,061,288,640135,348,480
Size1012.1 MB 129.1 MB
Events in quadrant A4,886,309965,523
Events in quadrant B9,874,564977,979
Events in quadrant C7,096,051878,400
Events in quadrant D16,629,477559,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221622
B0366112
C0281782
D0565702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103352252.177068%
B103369769.442724%
C103366756.530573%
D10336414340.083204%

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 11620 10337 59 59 0.51% 0.57%
B 11621 10338 601 601 5.17% 5.81%
C 11621 10338 411 411 3.54% 3.98%
D 11621 10338 3655 3655 31.45% 35.36%

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 10 251 383731 1371.89 1143 1111 278.9
A 3 245 46316 162.08 1143 1111 278.9
A 4 3 17385 58.35 1143 1111 278.9
B 10 128 4836382 20476.83 1105 1061 236.1
B 5 172 196398 827.22 1105 1061 236.1
B 0 186 78139 326.41 1105 1061 236.1
C 12 254 1270087 4272.95 1091 1080 297.0
C 12 252 751043 2525.24 1091 1080 297.0
C 9 38 467066 1569.05 1091 1080 297.0
D 12 110 7504070 28477.01 937 895 263.5
D 12 1 2190925 8311.88 937 895 263.5
D 2 120 952331 3611.01 937 895 263.5

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