ASTROSAT CZTI

Data Quality Report

Orbit 58469

Creation date: 2026-07-19T06:21:12.613633
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_044T04_9000006592_58469cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58469cztM0_level2_quad_clean.evt
Size (bytes)491,224,32092,341,440
Size468.5 MB 88.1 MB
Events in quadrant A3,552,501641,746
Events in quadrant B6,986,627538,219
Events in quadrant C3,237,407619,039
Events in quadrant D3,918,836558,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148612
B0250012
C0139332
D0161606

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62781201.911437%
B6279154624.621755%
C6279480.764453%
D62782644.205161%

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 8734 6280 59 59 0.68% 0.94%
B 8735 6281 1331 1331 15.24% 21.19%
C 8735 6281 31 31 0.35% 0.49%
D 8734 6280 246 246 2.82% 3.92%

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 10 17 548962 3064.76 718 700 178.9
A 12 80 51961 286.55 718 700 178.9
A 3 14 36792 201.75 718 700 178.9
B 2 249 3885489 29693.54 610 588 130.8
B 5 172 407404 3109.42 610 588 130.8
B 6 255 101766 773.34 610 588 130.8
C 6 223 204762 1067.4 696 693 191.2
C 12 252 78604 407.52 696 693 191.2
C 6 9 45978 236.87 696 693 191.2
D 8 240 1062852 5521.64 675 645 192.4
D 0 97 53884 276.75 675 645 192.4
D 5 173 39375 201.33 675 645 192.4

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