ASTROSAT CZTI

Data Quality Report

Orbit 56780

Creation date: 2026-03-27T15:22:20.534325
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_083T03_9000006562_56780cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56780cztM0_level2_quad_clean.evt
Size (bytes)512,997,12097,128,000
Size489.2 MB 92.6 MB
Events in quadrant A5,782,139626,411
Events in quadrant B4,746,344662,152
Events in quadrant C4,350,912606,201
Events in quadrant D3,590,574578,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222571
B0187571
C0174211
D0154431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66963365.017921%
B66964847.228196%
C66952033.032114%
D66961382.060932%

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 7636 6696 200 200 2.62% 2.99%
B 7636 6696 292 292 3.82% 4.36%
C 7635 6695 113 113 1.48% 1.69%
D 7636 6696 83 83 1.09% 1.24%

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 14 1833840 10282.55 719 700 178.3
A 7 64 821410 4603.57 719 700 178.3
A 10 251 286658 1604.01 719 700 178.3
B 2 249 1081718 7136.8 705 678 151.5
B 8 128 351367 2315.18 705 678 151.5
B 10 247 226833 1493.03 705 678 151.5
C 9 38 570586 2967.12 703 693 192.1
C 15 230 477991 2485.03 703 693 192.1
C 14 96 406764 2114.19 703 693 192.1
D 2 249 674220 3350.73 709 676 201.0
D 5 173 55562 273.05 709 676 201.0
D 2 236 42567 208.4 709 676 201.0

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