ASTROSAT CZTI

Data Quality Report

Orbit 00699

Creation date: 2024-06-27T14:01:44.674408
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/AS1P01_141T01_9000000100_00699cztM0_level2.evt modeM0/AS1P01_141T01_9000000100_00699cztM0_level2_quad_clean.evt
Size (bytes)1,314,253,44074,329,920
Size1.2 GB 70.9 MB
Events in quadrant A8,762,846449,210
Events in quadrant B9,395,872453,571
Events in quadrant C10,728,557438,932
Events in quadrant D10,451,971418,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309930
B0329320
C0368360
D0360266

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7039470.667708%
B70391131.605342%
C70151021.454027%
D70381071.520318%

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 7039 7039 417 417 5.92% 5.92%
B 7039 7039 548 548 7.79% 7.79%
C 7039 7016 854 854 12.13% 12.17%
D 7038 7038 814 814 11.57% 11.57%

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 15 69 29395 49.08 2272 2292 552.2
A 15 171 12499 18.48 2272 2292 552.2
A 11 79 9205 12.52 2272 2292 552.2
B 7 221 254783 456.87 2317 2336 552.6
B 5 191 200610 358.83 2317 2336 552.6
B 0 220 67848 118.56 2317 2336 552.6
C 3 95 455425 754.77 2126 2205 600.5
C 3 31 402279 666.27 2126 2205 600.5
C 9 85 373156 617.77 2126 2205 600.5
D 0 25 2142655 3278.3 2086 2165 652.9
D 1 4 175464 265.42 2086 2165 652.9
D 12 233 152114 229.66 2086 2165 652.9

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