ASTROSAT CZTI

Data Quality Report

Orbit 57796

Creation date: 2026-06-04T01:11:06.491318
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_083T16_9000006580_57796cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57796cztM0_level2_quad_clean.evt
Size (bytes)619,277,76086,656,320
Size590.6 MB 82.6 MB
Events in quadrant A2,910,652613,055
Events in quadrant B4,895,672632,273
Events in quadrant C9,456,716427,316
Events in quadrant D5,166,340505,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131131
B0192231
C0325621
D0198626

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6379250.391911%
B63793325.204578%
C6379187429.377645%
D63795829.123687%

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 7329 6379 0 0 0.00% 0.00%
B 7329 6379 138 138 1.88% 2.16%
C 7328 6378 1740 1740 23.74% 27.28%
D 7328 6379 646 646 8.82% 10.13%

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 3 128 217448 1292.49 677 662 167.7
A 3 14 53621 315.74 677 662 167.7
A 3 245 11961 67.37 677 662 167.7
B 4 80 1769573 12416.02 660 635 142.5
B 10 247 147372 1029.93 660 635 142.5
B 0 171 105329 734.84 660 635 142.5
C 9 38 4880955 31594.53 566 559 154.5
C 15 224 1976030 12788.73 566 559 154.5
C 10 21 203509 1313.85 566 559 154.5
D 12 0 1814489 10288.22 623 595 176.3
D 8 160 405305 2295.47 623 595 176.3
D 2 153 190079 1074.73 623 595 176.3

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