ASTROSAT CZTI

Data Quality Report

Orbit 01391

Creation date: 2024-06-27T14:11:59.201790
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/AS1G04_014T02_9000000232_01391cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01391cztM0_level2_quad_clean.evt
Size (bytes)1,231,591,680101,154,240
Size1.1 GB 96.5 MB
Events in quadrant A12,706,196604,621
Events in quadrant B8,849,680675,426
Events in quadrant C7,784,162664,940
Events in quadrant D7,510,949645,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426533
B0310612
C0279012
D0271672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6772112316.582989%
B6772450.664501%
C677280.118133%
D6772650.959835%

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 7857 6772 2607 2607 33.18% 38.50%
B 7857 6773 493 493 6.27% 7.28%
C 7857 6773 181 181 2.30% 2.67%
D 7857 6773 225 225 2.86% 3.32%

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 15 127 5421719 12127.57 1873 1886 446.9
A 4 32 52054 112.26 1873 1886 446.9
A 12 243 21276 43.39 1873 1886 446.9
B 8 4 439692 886.11 2101 2112 493.8
B 12 52 125095 249.04 2101 2112 493.8
B 5 191 84347 166.53 2101 2112 493.8
C 15 241 237531 444.58 1906 1971 529.8
C 7 220 43600 78.57 1906 1971 529.8
C 3 111 22632 38.99 1906 1971 529.8
D 2 16 301209 564.14 1822 1862 530.6
D 1 83 169104 315.18 1822 1862 530.6
D 1 20 118025 218.92 1822 1862 530.6

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