ASTROSAT CZTI

Data Quality Report

Orbit 58092

Creation date: 2026-06-23T22:22:47.112596
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_042T02_9000006586_58092cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58092cztM0_level2_quad_clean.evt
Size (bytes)580,965,12095,140,800
Size554.1 MB 90.7 MB
Events in quadrant A2,985,303659,309
Events in quadrant B8,220,633606,612
Events in quadrant C3,616,768617,866
Events in quadrant D6,184,218548,431

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133601
B0289961
C0152862
D0229351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64311191.850412%
B6432119318.547886%
C64311912.969989%
D643165710.216141%

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 7531 6431 2 2 0.03% 0.03%
B 7532 6432 628 628 8.34% 9.76%
C 7531 6431 100 100 1.33% 1.55%
D 7531 6431 482 482 6.40% 7.49%

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 3 245 20555 106.52 749 730 186.1
A 2 143 16572 85.12 749 730 186.1
A 4 3 16542 84.96 749 730 186.1
B 10 128 4817108 31888.85 696 668 151.0
B 5 172 276560 1826.64 696 668 151.0
B 4 171 77843 510.96 696 668 151.0
C 12 252 333290 1698.22 712 704 195.8
C 6 223 315418 1606.96 712 704 195.8
C 12 254 88369 447.63 712 704 195.8
D 12 110 1078233 5472.74 697 666 196.9
D 3 224 1007794 5114.99 697 666 196.9
D 12 1 443678 2249.96 697 666 196.9

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