ASTROSAT CZTI

Data Quality Report

Orbit 53634

Creation date: 2025-08-27T23:01:17.016043
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_022T05_9000006504_53634cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53634cztM0_level2_quad_clean.evt
Size (bytes)1,118,520,00077,950,080
Size1.0 GB 74.3 MB
Events in quadrant A8,048,827567,727
Events in quadrant B15,688,376156,589
Events in quadrant C9,341,224550,222
Events in quadrant D7,767,722581,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289200
B0515991
C0327820
D0280950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7232160822.234513%
B7231599282.865440%
C7231164422.735445%
D723286511.960730%

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 7233 7233 1445 1445 19.98% 19.98%
B 7232 7229 4677 4677 64.67% 64.70%
C 7232 7231 1531 1531 21.17% 21.17%
D 7233 7233 940 940 13.00% 13.00%

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 78 3252026 18398.62 707 689 176.7
A 4 191 957083 5412.03 707 689 176.7
A 4 95 270984 1529.54 707 689 176.7
B 15 20 11328329 128814.09 402 390 87.9
B 4 206 1172247 13325.61 402 390 87.9
B 5 172 757819 8613.0 402 390 87.9
C 15 224 2663036 13344.04 719 714 199.5
C 9 38 1976503 9903.01 719 714 199.5
C 1 241 740803 3709.46 719 714 199.5
D 8 176 3069176 14024.57 756 722 218.8
D 0 5 356928 1628.06 756 722 218.8
D 3 12 351992 1605.5 756 722 218.8

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