ASTROSAT CZTI

Data Quality Report

Orbit 20210827_A10_053T10_9000004670_level2

Creation date: 2025-12-28T10:07:28.307492
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/AS1A10_053T10_9000004670cztM0_level2.fits modeM0/AS1A10_053T10_9000004670cztM0_level2_quad_clean.evt
Size (bytes)225,466,560112,112,640
Size215.0 MB 106.9 MB
Events in quadrant A1,435,706518,830
Events in quadrant B1,353,072513,181
Events in quadrant C1,346,848454,011
Events in quadrant D1,236,580451,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442390
B0662630
C0679940
D0587560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04280
B04300
C04320
D04300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A211631200.567027%
B211395442.573442%
C21135255212.074758%
D211524432.094365%

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 26774 21187 0 0 0.00% 0.00%
B 26773 21152 0 0 0.00% 0.00%
C 26774 21139 0 0 0.00% 0.00%
D 26774 21156 0 0 0.00% 0.00%

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 29 1368 11.05 375 355 91.7
A 0 30 1078 7.89 375 355 91.7
A 9 19 1073 7.83 375 355 91.7
B 2 9 1158 11.16 357 342 73.1
B 3 80 923 7.94 357 342 73.1
B 5 128 917 7.86 357 342 73.1
C 1 80 965 6.92 356 337 90.7
C 1 81 956 6.82 356 337 90.7
C 3 187 953 6.79 356 337 90.7
D 7 3 940 6.5 354 323 94.9
D 10 189 915 6.24 354 323 94.9
D 15 47 911 6.2 354 323 94.9

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