ASTROSAT CZTI

Data Quality Report

Orbit 54155

Creation date: 2025-10-02T00:27:31.440308
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_012T01_9000006512_54155cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54155cztM0_level2_quad_clean.evt
Size (bytes)572,598,72084,591,360
Size546.1 MB 80.7 MB
Events in quadrant A7,444,698437,061
Events in quadrant B3,486,844643,971
Events in quadrant C4,027,899572,144
Events in quadrant D5,734,794458,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266841
B0151651
C0169261
D0218101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6446197430.623643%
B64472533.924306%
C64473034.699860%
D6447112717.480999%

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 7336 6446 1471 1471 20.05% 22.82%
B 7337 6448 83 83 1.13% 1.29%
C 7337 6448 178 178 2.43% 2.76%
D 7337 6448 887 887 12.09% 13.76%

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 29 4844156 35247.42 555 541 137.4
A 0 8 115413 835.93 555 541 137.4
A 15 174 110083 797.15 555 541 137.4
B 4 171 315941 2243.55 663 638 140.5
B 0 213 173995 1233.53 663 638 140.5
B 10 245 90967 642.74 663 638 140.5
C 9 38 1090396 6056.46 657 651 179.9
C 9 237 100061 552.49 657 651 179.9
C 14 254 82325 453.92 657 651 179.9
D 3 12 1249178 7438.33 602 576 167.9
D 8 176 1201330 7153.28 602 576 167.9
D 2 62 615854 3665.41 602 576 167.9

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