ASTROSAT CZTI

Data Quality Report

Orbit 57058

Creation date: 2026-04-15T08:15:50.546084
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_083T10_9000006566_57058cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57058cztM0_level2_quad_clean.evt
Size (bytes)408,435,840101,329,920
Size389.5 MB 96.6 MB
Events in quadrant A3,073,627677,991
Events in quadrant B3,456,546711,580
Events in quadrant C3,264,921644,355
Events in quadrant D4,801,692566,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140012
B0149642
C0143642
D0189152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6708400.596303%
B67092353.502757%
C6709440.655835%
D67094356.483828%

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 8999 6710 11 11 0.12% 0.16%
B 9000 6711 133 133 1.48% 1.98%
C 9000 6711 19 19 0.21% 0.28%
D 9000 6711 386 386 4.29% 5.75%

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 14 83874 453.91 747 730 183.2
A 4 3 20752 109.31 747 730 183.2
A 8 249 14165 73.35 747 730 183.2
B 10 16 429427 2782.72 726 700 154.1
B 0 63 70340 452.01 726 700 154.1
B 10 247 37259 237.29 726 700 154.1
C 1 16 82243 409.33 730 721 199.2
C 9 38 73989 367.89 730 721 199.2
C 12 252 63542 315.43 730 721 199.2
D 12 33 805227 4077.39 698 664 197.3
D 12 251 473810 2397.82 698 664 197.3
D 15 142 264622 1337.69 698 664 197.3

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