ASTROSAT CZTI

Data Quality Report

Orbit 54168

Creation date: 2025-10-02T21:09:48.758165
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_012T01_9000006512_54168cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54168cztM0_level2_quad_clean.evt
Size (bytes)629,176,32088,444,800
Size600.0 MB 84.3 MB
Events in quadrant A3,803,549645,113
Events in quadrant B9,229,708481,824
Events in quadrant C3,315,952623,386
Events in quadrant D6,421,345461,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159521
B0320451
C0147051
D0237951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66853094.622289%
B6686231934.684415%
C6686921.376010%
D6685149322.333583%

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 7775 6686 165 165 2.12% 2.47%
B 7776 6687 1718 1718 22.09% 25.69%
C 7776 6687 39 39 0.50% 0.58%
D 7775 6686 1234 1234 15.87% 18.46%

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 7 29 432815 2428.41 709 691 177.9
A 15 174 339309 1902.93 709 691 177.9
A 3 14 94174 525.35 709 691 177.9
B 5 172 4836111 39440.98 579 558 122.6
B 15 20 768886 6266.83 579 558 122.6
B 4 171 454210 3700.19 579 558 122.6
C 9 38 311003 1628.08 694 687 190.6
C 14 254 81440 423.67 694 687 190.6
C 15 177 52003 269.23 694 687 190.6
D 8 176 3591090 21629.59 581 554 166.0
D 3 12 234287 1408.02 581 554 166.0
D 10 181 97856 586.15 581 554 166.0

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