ASTROSAT CZTI

Data Quality Report

Orbit 11637

Creation date: 2024-06-27T16:16:14.401300
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/AS1A04_026T01_9000001712_11637cztM0_level2.evt modeM0/AS1A04_026T01_9000001712_11637cztM0_level2_quad_clean.evt
Size (bytes)713,810,88091,817,280
Size680.7 MB 87.6 MB
Events in quadrant A6,109,215596,116
Events in quadrant B3,934,107638,983
Events in quadrant C2,920,788613,822
Events in quadrant D8,231,502494,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225392
B0154481
C0126781
D0287051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A624385913.759411%
B62431732.771104%
C6243190.304341%
D6243191430.658337%

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 7519 6245 474 474 6.30% 7.59%
B 7519 6245 65 65 0.86% 1.04%
C 7519 6245 0 0 0.00% 0.00%
D 7519 6245 1461 1461 19.43% 23.39%

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 5 2711904 17855.95 754 741 151.8
A 1 162 181341 1189.45 754 741 151.8
A 1 178 101397 662.93 754 741 151.8
B 4 239 701510 4809.4 783 767 145.7
B 0 168 71508 485.52 783 767 145.7
B 15 204 35983 241.7 783 767 145.7
C 13 61 5599 28.41 749 751 170.7
C 3 202 1956 7.06 749 751 170.7
C 13 250 1886 6.65 749 751 170.7
D 13 152 4516776 28476.85 662 642 158.6
D 10 253 548259 3453.04 662 642 158.6
D 8 195 214635 1349.35 662 642 158.6

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