ASTROSAT CZTI

Data Quality Report

Orbit 59215

Creation date: 2026-09-07T12:14:06.706646
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/AS1T05_271T01_9000006604_59215cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59215cztM0_level2_quad_clean.evt
Size (bytes)839,724,48098,712,000
Size800.8 MB 94.1 MB
Events in quadrant A4,544,499769,879
Events in quadrant B3,803,608842,356
Events in quadrant C4,893,471726,522
Events in quadrant D17,206,96482,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193331
B0173061
C0203781
D0568871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81592332.855742%
B8159991.213384%
C81593724.559382%
D8160728289.240196%

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 8174 8160 179 179 2.19% 2.19%
B 8174 8160 20 20 0.24% 0.25%
C 8174 8160 336 336 4.11% 4.12%
D 8175 8161 6181 6181 75.61% 75.74%

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 24 449079 2044.75 889 865 219.2
A 14 238 361288 1644.25 889 865 219.2
A 10 251 157913 716.45 889 865 219.2
B 4 236 44125 226.02 893 857 191.4
B 7 252 43165 221.0 893 857 191.4
B 10 247 38042 194.24 893 857 191.4
C 15 147 1071857 4546.96 861 854 235.5
C 5 250 110721 466.44 861 854 235.5
C 6 223 67436 282.67 861 854 235.5
D 12 110 14828847 105545.27 497 475 140.5
D 8 240 175768 1247.7 497 475 140.5
D 11 129 148402 1052.91 497 475 140.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct