ASTROSAT CZTI

Data Quality Report

Orbit 52615

Creation date: 2025-06-20T11:39:53.552250
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_011T06_9000006478_52615cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52615cztM0_level2_quad_clean.evt
Size (bytes)988,246,08079,444,800
Size942.5 MB 75.8 MB
Events in quadrant A3,646,512645,734
Events in quadrant B8,960,830590,183
Events in quadrant C15,933,627163,595
Events in quadrant D7,508,153525,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160252
B0314672
C0520382
D0271802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68981392.015077%
B6898142020.585677%
C6898533977.399246%
D689894413.685126%

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 7948 6899 105 105 1.32% 1.52%
B 7948 6899 1052 1052 13.24% 15.25%
C 7947 6898 4847 4847 60.99% 70.27%
D 7948 6899 892 892 11.22% 12.93%

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 277335 1597.32 696 681 173.2
A 14 254 131305 754.18 696 681 173.2
A 3 95 92847 532.14 696 681 173.2
B 10 128 3598424 25804.25 661 639 139.4
B 10 254 1533828 10996.43 661 639 139.4
B 8 234 299102 2140.65 661 639 139.4
C 15 248 13905154 131841.55 371 367 105.5
C 13 3 112624 1064.39 371 367 105.5
C 12 254 75505 712.44 371 367 105.5
D 8 176 2243047 11969.62 639 608 187.3
D 2 62 898448 4792.46 639 608 187.3
D 2 37 389940 2078.16 639 608 187.3

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