ASTROSAT CZTI

Data Quality Report

Orbit 54690

Creation date: 2025-11-11T14:07:42.693340
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_066T07_9000006522_54690cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54690cztM0_level2_quad_clean.evt
Size (bytes)668,661,12089,161,920
Size637.7 MB 85.0 MB
Events in quadrant A3,598,836660,897
Events in quadrant B3,644,442703,468
Events in quadrant C4,016,027621,910
Events in quadrant D12,988,387260,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150582
B0151132
C0161122
D0431412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64861772.728955%
B64862033.129818%
C64862503.854456%
D6486405662.534690%

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 7626 6487 28 28 0.37% 0.43%
B 7626 6487 45 45 0.59% 0.69%
C 7626 6487 103 103 1.35% 1.59%
D 7626 6487 3934 3934 51.59% 60.64%

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 14 278125 1507.07 752 734 184.1
A 11 3 214194 1159.74 752 734 184.1
A 7 190 44404 237.26 752 734 184.1
B 2 249 459255 2898.24 740 715 158.2
B 7 0 134466 845.38 740 715 158.2
B 0 213 54368 339.12 740 715 158.2
C 6 223 434975 2166.29 732 727 200.5
C 14 254 263202 1309.38 732 727 200.5
C 3 242 170832 848.59 732 727 200.5
D 11 129 7271172 49327.0 506 482 147.4
D 2 96 1375376 9327.78 506 482 147.4
D 11 176 771827 5233.08 506 482 147.4

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