ASTROSAT CZTI

Data Quality Report

Orbit 56548

Creation date: 2026-03-12T00:29:00.812167
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_060T01_9000006556_56548cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56548cztM0_level2_quad_clean.evt
Size (bytes)438,428,16092,730,240
Size418.1 MB 88.4 MB
Events in quadrant A3,332,497616,103
Events in quadrant B3,766,314651,350
Events in quadrant C5,084,083547,936
Events in quadrant D3,548,698546,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143291
B0157001
C0196771
D0150691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6397410.640925%
B63971902.970142%
C63975789.035485%
D63961211.891807%

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 7473 6399 27 27 0.36% 0.42%
B 7473 6399 70 70 0.94% 1.09%
C 7473 6399 616 616 8.24% 9.63%
D 7472 6398 92 92 1.23% 1.44%

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 4 95 110944 636.61 694 677 173.2
A 3 22 101387 581.44 694 677 173.2
A 10 251 79724 456.37 694 677 173.2
B 4 206 241528 1669.16 684 663 144.3
B 5 185 182836 1262.43 684 663 144.3
B 0 183 149424 1030.89 684 663 144.3
C 13 3 1249411 6945.11 649 642 179.8
C 15 230 796392 4425.62 649 642 179.8
C 12 250 239994 1331.17 649 642 179.8
D 2 120 238550 1263.01 661 633 188.4
D 2 249 152467 806.03 661 633 188.4
D 3 12 141099 745.68 661 633 188.4

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