ASTROSAT CZTI

Data Quality Report

Orbit 52443

Creation date: 2025-06-27T21:42:26.999020
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/AS1A13_037T01_9000006476_52443cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52443cztM0_level2_quad_clean.evt
Size (bytes)984,493,44088,248,960
Size938.9 MB 84.2 MB
Events in quadrant A3,444,172705,511
Events in quadrant B3,791,372761,215
Events in quadrant C14,176,607367,857
Events in quadrant D14,436,645302,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161754
B0168010
C0474330
D0482090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7678290.377703%
B7679440.572991%
C7679377149.107957%
D7679426455.528064%

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 7678 7678 16 16 0.21% 0.21%
B 7679 7679 13 13 0.17% 0.17%
C 7678 7678 3728 3728 48.55% 48.55%
D 7679 7679 3800 3800 49.49% 49.49%

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 8 249 96949 484.88 804 784 198.3
A 4 61 52450 260.51 804 784 198.3
A 5 240 42546 210.57 804 784 198.3
B 10 254 118417 687.98 797 766 171.0
B 4 81 110845 643.7 797 766 171.0
B 4 170 96449 559.52 797 766 171.0
C 15 224 8505476 52522.68 589 586 161.9
C 15 248 845059 5215.12 589 586 161.9
C 2 12 770658 4755.65 589 586 161.9
D 12 17 4593774 30413.28 528 504 151.0
D 12 2 3442747 22792.02 528 504 151.0
D 2 153 1312498 8687.07 528 504 151.0

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