ASTROSAT CZTI

Data Quality Report

Orbit 53235

Creation date: 2025-08-01T12:04:30.624943
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/AS1C09_011T06_9000006490_53235cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53235cztM0_level2_quad_clean.evt
Size (bytes)841,582,08073,759,680
Size802.6 MB 70.3 MB
Events in quadrant A5,042,035564,920
Events in quadrant B12,405,269228,470
Events in quadrant C7,422,122483,579
Events in quadrant D5,799,098519,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193151
B0411152
C0264821
D0216071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62586229.939278%
B6258426868.200703%
C6258125220.006392%
D62585498.772771%

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 7278 6259 526 526 7.23% 8.40%
B 7278 6259 3768 3768 51.77% 60.20%
C 7278 6259 1073 1073 14.74% 17.14%
D 7278 6259 359 359 4.93% 5.74%

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 62 1338022 8364.8 636 621 159.9
A 7 206 372795 2327.77 636 621 159.9
A 14 254 267523 1669.34 636 621 159.9
B 12 33 8587950 83439.55 479 462 102.9
B 2 249 860333 8354.85 479 462 102.9
B 10 254 520373 5051.66 479 462 102.9
C 1 241 1785528 10900.17 596 591 163.8
C 15 224 1634025 9974.97 596 591 163.8
C 9 38 940049 5737.04 596 591 163.8
D 15 125 1149384 6434.41 627 598 178.5
D 10 172 940906 5266.71 627 598 178.5
D 6 239 260075 1453.34 627 598 178.5

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