ASTROSAT CZTI

Data Quality Report

Orbit 55952

Creation date: 2026-02-05T20:02:46.872875
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_066T02_9000006546_55952cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55952cztM0_level2_quad_clean.evt
Size (bytes)511,479,36090,820,800
Size487.8 MB 86.6 MB
Events in quadrant A4,763,860600,174
Events in quadrant B3,020,216654,953
Events in quadrant C3,656,606570,919
Events in quadrant D6,989,090471,538

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187742
B0136541
C0157901
D0252041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64813465.338682%
B6482500.771367%
C64821782.746066%
D6482115717.849429%

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 7496 6482 255 255 3.40% 3.93%
B 7497 6483 14 14 0.19% 0.22%
C 7497 6483 126 126 1.68% 1.94%
D 7497 6483 1147 1147 15.30% 17.69%

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 945037 5624.72 670 653 167.9
A 12 115 766812 4563.22 670 653 167.9
A 3 14 196029 1163.65 670 653 167.9
B 0 171 117378 815.05 669 646 143.2
B 4 21 79050 547.43 669 646 143.2
B 0 216 46218 318.19 669 646 143.2
C 15 193 306055 1689.41 650 643 180.8
C 1 29 280451 1547.78 650 643 180.8
C 15 199 129095 710.54 650 643 180.8
D 11 129 4219648 24172.56 616 590 174.5
D 3 12 83234 473.5 616 590 174.5
D 7 129 50020 283.2 616 590 174.5

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