ASTROSAT CZTI

Data Quality Report

Orbit 58254

Creation date: 2026-07-04T19:37:30.092162
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_044T03_9000006588_58254cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58254cztM0_level2_quad_clean.evt
Size (bytes)838,296,00087,969,600
Size799.5 MB 83.9 MB
Events in quadrant A5,147,284643,987
Events in quadrant B8,971,806566,045
Events in quadrant C3,643,697658,427
Events in quadrant D12,703,426287,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205992
B0316563
C0162912
D0427212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72817209.888752%
B7280204028.021978%
C72801231.689560%
D7281423058.096415%

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 7616 7283 432 432 5.67% 5.93%
B 7615 7282 1490 1490 19.57% 20.46%
C 7615 7282 54 54 0.71% 0.74%
D 7616 7283 3675 3675 48.25% 50.46%

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 13 248 1256637 6491.76 773 752 193.5
A 7 64 724772 3742.51 773 752 193.5
A 4 238 57569 293.69 773 752 193.5
B 6 255 4143267 27417.68 709 681 151.1
B 4 206 1194573 7901.76 709 681 151.1
B 0 156 168986 1113.92 709 681 151.1
C 15 219 120785 565.49 774 767 212.2
C 6 223 103854 485.72 774 767 212.2
C 7 2 76498 356.82 774 767 212.2
D 12 110 8467627 53736.48 536 509 157.6
D 8 160 1303141 8267.14 536 509 157.6
D 2 249 187066 1183.98 536 509 157.6

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