ASTROSAT CZTI

Data Quality Report

Orbit 20240301_A13_071T04_9000006110_level2

Creation date: 2024-03-06T12:46:33.429729
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/AS1A13_071T04_9000006110cztM0_level2.fits modeM0/AS1A13_071T04_9000006110cztM0_level2_quad_clean.evt
Size (bytes)1,268,832,9601,284,819,840
Size1.2 GB 1.2 GB
Events in quadrant A7,563,1567,719,209
Events in quadrant B7,293,9707,788,122
Events in quadrant C7,542,0427,295,575
Events in quadrant D6,297,2566,386,810

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01990
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04546520
B03343190
C03126890
D04263340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028820
B028800
C028830
D028820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14190442072.964680%
B14189758234.103681%
C14190226721.882990%
D14189989456.303779%

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 191920 141979 0 0 0.00% 0.00%
B 191920 141933 0 0 0.00% 0.00%
C 191920 141925 0 0 0.00% 0.00%
D 191920 141557 0 0 0.00% 0.00%

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 7 110 6139 8.54 1974 1845 502.6
A 15 236 5823 7.91 1974 1845 502.6
A 0 29 5719 7.71 1974 1845 502.6
B 2 9 6687 13.01 1932 1845 372.1
B 2 8 5444 9.67 1932 1845 372.1
B 3 17 5358 9.44 1932 1845 372.1
C 3 202 5858 7.88 1995 1857 507.6
C 1 81 5836 7.84 1995 1857 507.6
C 3 203 5656 7.48 1995 1857 507.6
D 12 6 4781 6.27 1813 1647 499.7
D 10 189 4547 5.8 1813 1647 499.7
D 4 12 4542 5.79 1813 1647 499.7

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