ASTROSAT CZTI

Data Quality Report

Orbit 32017

Creation date: 2024-06-27T20:35:17.250286
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_109T01_9000004678_32017cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32017cztM0_level2_quad_clean.evt
Size (bytes)601,352,64088,418,880
Size573.5 MB 84.3 MB
Events in quadrant A3,452,228579,915
Events in quadrant B5,273,216578,197
Events in quadrant C4,152,667539,408
Events in quadrant D4,896,585528,534

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140562
B0199824
C0166112
D0191362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470560.865533%
B64701472.272025%
C64702393.693972%
D6470891.375580%

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 8885 6470 0 0 0.00% 0.00%
B 8885 6470 12 12 0.14% 0.19%
C 8885 6470 52 52 0.59% 0.80%
D 8885 6470 27 27 0.30% 0.42%

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 13 254 11644 61.11 893 881 176.1
A 3 137 8311 42.19 893 881 176.1
A 0 226 7400 37.01 893 881 176.1
B 6 159 1696111 10216.23 882 862 165.9
B 10 245 54088 320.76 882 862 165.9
B 5 172 32413 190.14 882 862 165.9
C 3 233 526582 2687.29 840 847 195.6
C 0 10 168019 854.5 840 847 195.6
C 14 238 142585 724.49 840 847 195.6
D 8 195 1578680 7880.02 844 823 200.2
D 2 250 77412 382.5 844 823 200.2
D 2 234 25884 125.16 844 823 200.2

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