ASTROSAT CZTI

Data Quality Report

Orbit 57873

Creation date: 2026-06-09T04:07:24.446119
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_125T11_9000006582_57873cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57873cztM0_level2_quad_clean.evt
Size (bytes)381,614,40096,272,640
Size363.9 MB 91.8 MB
Events in quadrant A2,764,186639,315
Events in quadrant B3,108,609679,143
Events in quadrant C3,662,609591,070
Events in quadrant D4,097,829563,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128932
B0137842
C0153942
D0164152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335340.536701%
B63341031.626145%
C63341582.494474%
D6334661.041996%

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 7495 6336 0 0 0.00% 0.00%
B 7494 6335 26 26 0.35% 0.41%
C 7494 6335 130 130 1.73% 2.05%
D 7494 6335 59 59 0.79% 0.93%

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 7 64 66249 388.23 689 671 168.9
A 3 245 11361 63.29 689 671 168.9
A 3 128 9083 49.8 689 671 168.9
B 5 172 103768 711.41 681 655 144.9
B 7 252 47493 323.15 681 655 144.9
B 0 63 46637 317.24 681 655 144.9
C 15 224 722596 4039.01 653 646 178.7
C 6 223 117220 652.18 653 646 178.7
C 12 252 76002 421.59 653 646 178.7
D 12 110 694578 3777.85 653 623 183.7
D 2 153 478351 2600.72 653 623 183.7
D 3 12 127574 691.11 653 623 183.7

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