ASTROSAT CZTI

Data Quality Report

Orbit 30182

Creation date: 2024-06-27T20:11:56.305511
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_102T01_9000004340_30182cztM0_level2.evt modeM0/AS1A10_102T01_9000004340_30182cztM0_level2_quad_clean.evt
Size (bytes)976,155,84065,738,880
Size930.9 MB 62.7 MB
Events in quadrant A3,366,264466,224
Events in quadrant B5,146,745470,228
Events in quadrant C15,227,913211,381
Events in quadrant D5,383,166386,959

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136922
B0198022
C0496408
D0202162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6497681.046637%
B64971702.616592%
C6496617995.120074%
D649679012.161330%

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 7647 6499 0 0 0.00% 0.00%
B 7647 6499 0 0 0.00% 0.00%
C 7646 6496 5470 5470 71.54% 84.21%
D 7646 6497 586 586 7.66% 9.02%

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 8 192 18125 99.49 868 851 173.6
A 13 254 10309 54.48 868 851 173.6
A 3 137 8408 43.53 868 851 173.6
B 6 159 1737729 10538.85 863 843 164.8
B 0 190 21403 124.75 863 843 164.8
B 12 111 20201 117.45 863 843 164.8
C 3 233 13203201 114110.08 494 497 115.7
C 14 238 77315 663.93 494 497 115.7
C 15 208 11877 98.36 494 497 115.7
D 1 52 1189094 6364.44 782 766 186.7
D 13 104 1031155 5518.55 782 766 186.7
D 8 195 152682 813.63 782 766 186.7

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