ASTROSAT CZTI

Data Quality Report

Orbit 25853

Creation date: 2024-06-27T19:22:06.923385
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/AS1A07_068T01_9000003756_25853cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25853cztM0_level2_quad_clean.evt
Size (bytes)595,186,56094,671,360
Size567.6 MB 90.3 MB
Events in quadrant A3,527,624637,722
Events in quadrant B3,223,982645,016
Events in quadrant C6,715,447567,878
Events in quadrant D4,136,678581,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144530
B0133710
C0244230
D0164110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62361011.619628%
B6236540.865940%
C623662410.006414%
D62363114.987171%

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 7561 6238 48 48 0.63% 0.77%
B 7561 6238 0 0 0.00% 0.00%
C 7561 6238 312 312 4.13% 5.00%
D 7561 6238 200 200 2.65% 3.21%

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 368298 2242.27 819 805 163.9
A 13 254 9562 53.43 819 805 163.9
A 3 137 7313 39.71 819 805 163.9
B 12 111 18310 113.28 811 792 154.6
B 11 111 16256 100.0 811 792 154.6
B 6 36 15824 97.21 811 792 154.6
C 7 87 3640334 21105.47 746 751 172.4
C 14 238 121282 698.94 746 751 172.4
C 3 233 31631 179.07 746 751 172.4
D 1 52 1172679 6460.23 762 746 181.4
D 12 233 36307 196.03 762 746 181.4
D 2 234 23596 125.96 762 746 181.4

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