ASTROSAT CZTI

Data Quality Report

Orbit 52503

Creation date: 2025-06-12T19:31:07.909685
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_52503cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52503cztM0_level2_quad_clean.evt
Size (bytes)1,216,336,32075,700,800
Size1.1 GB 72.2 MB
Events in quadrant A3,781,096703,088
Events in quadrant B12,847,087473,063
Events in quadrant C11,295,427390,619
Events in quadrant D16,515,727196,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165730
B0432950
C0388753
D0542410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75921011.330348%
B7593326743.026472%
C7592333043.861960%
D7592551772.668599%

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 7592 7592 39 39 0.51% 0.51%
B 7592 7592 2806 2806 36.96% 36.96%
C 7591 7591 2749 2749 36.21% 36.21%
D 7592 7592 5274 5274 69.47% 69.47%

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 225909 1122.72 816 799 200.5
A 8 9 87745 433.64 816 799 200.5
A 15 174 48502 237.92 816 799 200.5
B 10 44 5483661 39892.23 639 617 137.4
B 10 254 2734750 19892.36 639 617 137.4
B 7 0 1628208 11841.64 639 617 137.4
C 15 224 7400091 45594.0 591 584 162.3
C 4 5 542234 3337.52 591 584 162.3
C 13 3 335975 2066.6 591 584 162.3
D 6 42 9993895 70223.18 498 476 142.3
D 15 93 3098611 21770.42 498 476 142.3
D 7 96 438923 3080.94 498 476 142.3

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