ASTROSAT CZTI

Data Quality Report

Orbit 41909

Creation date: 2024-06-27T22:34:16.350077
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/AS1A12_099T01_9000005716_41909cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41909cztM0_level2_quad_clean.evt
Size (bytes)629,300,16071,887,680
Size600.1 MB 68.6 MB
Events in quadrant A3,719,204597,016
Events in quadrant B2,355,979649,087
Events in quadrant C3,172,408580,377
Events in quadrant D13,660,6251,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140732
B0100672
C0121232
D0436852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49662565.155054%
B496650.100685%
C49662745.517519%
D4966495599.778494%

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 7059 4967 183 183 2.59% 3.68%
B 7059 4967 1 1 0.01% 0.02%
C 7059 4967 267 267 3.78% 5.38%
D 7059 4967 4478 4478 63.44% 90.16%

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 14 24 894778 7645.23 575 564 117.0
A 10 83 495427 4230.91 575 564 117.0
A 15 223 93067 790.87 575 564 117.0
B 0 245 31846 279.22 587 572 112.0
B 12 111 13915 119.13 587 572 112.0
B 11 111 12673 108.04 587 572 112.0
C 0 10 758208 5855.12 561 566 129.4
C 15 214 193719 1492.7 561 566 129.4
C 0 15 17734 132.68 561 566 129.4
D 12 79 12839146 504485.71 98 94 25.4
D 13 249 340812 13387.85 98 94 25.4
D 2 249 71746 2815.43 98 94 25.4

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