ASTROSAT CZTI

Data Quality Report

Orbit 53266

Creation date: 2025-08-04T13:21:08.616989
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/AS1C09_011T08_9000006492_53266cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53266cztM0_level2_quad_clean.evt
Size (bytes)593,095,68092,246,400
Size565.6 MB 88.0 MB
Events in quadrant A5,743,456578,462
Events in quadrant B4,101,092672,604
Events in quadrant C6,945,056549,689
Events in quadrant D4,676,583552,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213392
B0165742
C0250332
D0183562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630773811.701284%
B63072664.217536%
C630782413.064849%
D63074727.483748%

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 7472 6307 720 720 9.64% 11.42%
B 7472 6307 169 169 2.26% 2.68%
C 7472 6307 718 718 9.61% 11.38%
D 7472 6307 383 383 5.13% 6.07%

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 62 2256053 13745.3 655 638 164.1
A 3 27 486806 2962.88 655 638 164.1
A 7 206 156987 952.84 655 638 164.1
B 2 249 437036 3042.31 675 653 143.4
B 0 213 228473 1588.28 675 653 143.4
B 4 81 219646 1526.74 675 653 143.4
C 9 38 1641248 9280.12 638 631 176.8
C 15 224 731845 4136.1 638 631 176.8
C 10 22 573791 3242.07 638 631 176.8
D 13 170 1073202 5887.54 648 620 182.2
D 12 3 146900 802.95 648 620 182.2
D 2 249 145532 795.44 648 620 182.2

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