ASTROSAT CZTI

Data Quality Report

Orbit 29459

Creation date: 2024-06-27T20:04:20.513508
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_102T08_9000004240_29459cztM0_level2.evt modeM0/AS1A10_102T08_9000004240_29459cztM0_level2_quad_clean.evt
Size (bytes)714,882,24069,661,440
Size681.8 MB 66.4 MB
Events in quadrant A3,417,887476,581
Events in quadrant B3,162,574487,809
Events in quadrant C3,819,017383,813
Events in quadrant D10,843,714339,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147391063
B0138431023
C0163241377
D0418285573

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01319
B013214
C01328
D01328

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60981452.377829%
B60741512.486006%
C6037134222.229584%
D5851246842.180824%

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 7319 6226 12 12 0.16% 0.19%
B 7314 6219 1 1 0.01% 0.02%
C 7316 6158 1 1 0.01% 0.02%
D 7279 5894 2275 2275 31.25% 38.60%

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 13 299784 1865.44 799 783 160.3
A 1 113 18169 108.47 799 783 160.3
A 5 98 17468 104.1 799 783 160.3
B 0 230 19009 119.68 790 771 152.4
B 12 111 18424 115.84 790 771 152.4
B 11 111 16879 105.7 790 771 152.4
C 14 254 460502 2849.95 688 694 161.3
C 14 238 440541 2726.23 688 694 161.3
C 3 233 210984 1303.41 688 694 161.3
D 8 195 5001305 33992.5 620 606 147.1
D 1 52 1807874 12284.99 620 606 147.1
D 7 80 1350743 9177.62 620 606 147.1

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