ASTROSAT CZTI

Data Quality Report

Orbit 56044

Creation date: 2026-02-06T04:19:51.446663
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_083T03_9000006548_56044cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56044cztM0_level2_quad_clean.evt
Size (bytes)476,472,96090,728,640
Size454.4 MB 86.5 MB
Events in quadrant A3,891,782598,693
Events in quadrant B3,331,876653,470
Events in quadrant C3,112,007581,121
Events in quadrant D6,790,450455,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163851
B0145291
C0144461
D0248821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65752053.117871%
B6576901.368613%
C6576470.714720%
D6576117217.822384%

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 7400 6576 165 165 2.23% 2.51%
B 7401 6577 16 16 0.22% 0.24%
C 7401 6577 28 28 0.38% 0.43%
D 7401 6577 1084 1084 14.65% 16.48%

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 4 249 570511 3374.44 673 656 168.9
A 7 64 405402 2396.74 673 656 168.9
A 0 8 115459 679.82 673 656 168.9
B 7 0 139364 954.27 676 651 145.4
B 0 213 137188 939.3 676 651 145.4
B 5 185 80572 549.81 676 651 145.4
C 15 147 236915 1314.78 655 649 179.7
C 12 252 91097 503.33 655 649 179.7
C 6 223 81931 452.32 655 649 179.7
D 11 129 3662971 21523.28 597 570 170.2
D 2 249 390253 2290.1 597 570 170.2
D 14 52 105577 617.11 597 570 170.2

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