ASTROSAT CZTI

Data Quality Report

Orbit 23208

Creation date: 2024-06-27T18:51:18.874859
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/AS1A08_008T02_9000003430_23208cztM0_level2.evt modeM0/AS1A08_008T02_9000003430_23208cztM0_level2_quad_clean.evt
Size (bytes)470,917,440126,616,320
Size449.1 MB 120.8 MB
Events in quadrant A3,295,289848,900
Events in quadrant B3,384,574860,145
Events in quadrant C3,474,939817,909
Events in quadrant D3,611,593800,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148491
B0149681
C0150401
D0159701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7289971.330772%
B72891221.673755%
C72901542.112483%
D72901351.851852%

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 7559 7291 0 0 0.00% 0.00%
B 7559 7291 1 1 0.01% 0.01%
C 7560 7291 1 1 0.01% 0.01%
D 7560 7292 48 48 0.63% 0.66%

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 10628 56.75 854 836 172.5
A 3 137 7719 39.89 854 836 172.5
A 0 226 7191 36.83 854 836 172.5
B 0 190 21095 125.18 852 828 161.9
B 12 111 19880 117.68 852 828 161.9
B 11 111 17715 104.3 852 828 161.9
C 14 238 130205 674.34 823 828 191.9
C 0 10 64451 331.62 823 828 191.9
C 7 247 38080 194.16 823 828 191.9
D 13 153 145047 712.07 829 802 202.6
D 1 52 136152 668.16 829 802 202.6
D 13 172 84342 412.4 829 802 202.6

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