ASTROSAT CZTI

Data Quality Report

Orbit 58230

Creation date: 2026-07-03T12:31:27.912793
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_044T03_9000006588_58230cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58230cztM0_level2_quad_clean.evt
Size (bytes)957,303,360146,393,280
Size913.0 MB 139.6 MB
Events in quadrant A4,893,6341,004,886
Events in quadrant B9,877,249985,622
Events in quadrant C5,135,518965,842
Events in quadrant D14,694,047726,722

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227831
B0368571
C0233531
D0512351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10811560.517991%
B10812115610.691824%
C108121020.943396%
D10811242822.458607%

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 10950 10811 32 32 0.29% 0.30%
B 10951 10811 731 731 6.68% 6.76%
C 10951 10813 85 85 0.78% 0.79%
D 10950 10810 2502 2502 22.85% 23.15%

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 3 146 107625 374.91 1147 1116 284.1
A 3 62 84089 292.07 1147 1116 284.1
A 13 248 72638 251.76 1147 1116 284.1
B 10 128 2548253 10856.72 1096 1053 234.6
B 2 249 1749833 7453.68 1096 1053 234.6
B 5 185 322671 1370.81 1096 1053 234.6
C 12 252 416521 1350.97 1117 1109 307.5
C 6 223 141600 456.89 1117 1109 307.5
C 9 237 65934 210.82 1117 1109 307.5
D 12 110 8988008 30789.51 1029 982 291.9
D 8 240 362476 1238.48 1029 982 291.9
D 6 239 315895 1078.89 1029 982 291.9

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