ASTROSAT CZTI

Data Quality Report

Orbit 56577

Creation date: 2026-03-13T23:16:36.903798
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_083T06_9000006558_56577cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56577cztM0_level2_quad_clean.evt
Size (bytes)457,375,68091,768,320
Size436.2 MB 87.5 MB
Events in quadrant A3,088,090614,023
Events in quadrant B3,182,632658,316
Events in quadrant C3,166,579581,848
Events in quadrant D6,997,377478,976

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137441
B0140971
C0143641
D0251731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6379641.003292%
B6380981.536050%
C6380520.815047%
D637993014.579088%

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 7434 6380 32 32 0.43% 0.50%
B 7435 6381 58 58 0.78% 0.91%
C 7435 6381 58 58 0.78% 0.91%
D 7434 6380 906 906 12.19% 14.20%

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 0 8 106892 625.95 686 670 169.7
A 4 249 105266 616.37 686 670 169.7
A 3 62 48510 281.91 686 670 169.7
B 0 173 126423 866.61 679 655 145.1
B 4 141 61628 420.14 679 655 145.1
B 4 206 59647 406.49 679 655 145.1
C 15 230 201045 1109.28 656 651 180.7
C 13 3 137500 757.53 656 651 180.7
C 9 38 108010 594.29 656 651 180.7
D 8 129 1433180 8047.59 622 593 178.0
D 8 240 1244548 6987.95 622 593 178.0
D 6 239 666590 3741.25 622 593 178.0

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