ASTROSAT CZTI

Data Quality Report

Orbit 54286

Creation date: 2025-10-10T21:10:12.845938
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_126T15_9000006516_54286cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54286cztM0_level2_quad_clean.evt
Size (bytes)433,679,04082,010,880
Size413.6 MB 78.2 MB
Events in quadrant A2,813,312566,337
Events in quadrant B3,628,144584,166
Events in quadrant C4,198,981473,389
Events in quadrant D4,957,737450,245

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01251
C01234
D01244

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013057410
B015755905
C0182681302
D0199941215

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59451141.917578%
B58001312.258621%
C581265111.200964%
D58115609.636896%

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 6983 6135 12 12 0.17% 0.20%
B 6984 6079 12 12 0.17% 0.20%
C 6984 6024 620 620 8.88% 10.29%
D 6984 6082 482 482 6.90% 7.93%

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 4 78 78978 501.83 632 614 156.2
A 7 29 75298 478.26 632 614 156.2
A 11 3 73168 464.62 632 614 156.2
B 7 0 822191 6390.5 602 579 128.6
B 5 185 147349 1141.58 602 579 128.6
B 0 213 50359 387.19 602 579 128.6
C 1 241 1030221 6662.22 569 564 154.6
C 14 254 797621 5157.22 569 564 154.6
C 12 252 73098 469.32 569 564 154.6
D 3 12 1502622 9127.62 574 547 164.6
D 2 153 379742 2304.24 574 547 164.6
D 6 239 376781 2286.25 574 547 164.6

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