ASTROSAT CZTI

Data Quality Report

Orbit 20220203_A05_019T01_9000004906_level2

Creation date: 2022-02-07T12:39:38.186608
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/AS1A05_019T01_9000004906cztM0_level2_bc.evt modeM0/AS1A05_019T01_9000004906cztM0_level2_quad_clean.evt
Size (bytes)8,695,549,4401,120,510,080
Size8.1 GB 1.0 GB
Events in quadrant A20,557,3867,701,089
Events in quadrant B34,238,6607,603,443
Events in quadrant C43,753,6197,245,146
Events in quadrant D158,247,4904,742,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019780
B019780
C019780
D019780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01968840
B02509800
C02748990
D06235070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A967151470.151993%
B9671537563.883575%
C9671561056.312361%
D967155527957.156594%

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 133916 96726 6 6 0.00% 0.01%
B 133916 96716 451 451 0.34% 0.47%
C 133916 96707 1991 1991 1.49% 2.06%
D 133916 96707 43781 43781 32.69% 45.27%

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 10 83 363314 319.44 5097 5011 1121.6
A 9 143 253924 221.92 5097 5011 1121.6
A 13 6 208431 181.36 5097 5011 1121.6
B 5 172 7319817 7288.93 5056 4942 1003.6
B 5 31 1571302 1560.81 5056 4942 1003.6
B 4 171 1290166 1280.67 5056 4942 1003.6
C 4 254 15900647 14344.52 4836 4809 1108.1
C 15 214 3720407 3352.98 4836 4809 1108.1
C 14 254 2018499 1817.17 4836 4809 1108.1
D 7 223 110435804 116627.11 3619 3524 946.9
D 8 195 13380659 14127.54 3619 3524 946.9
D 12 235 7742340 8172.93 3619 3524 946.9

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