ASTROSAT CZTI

Data Quality Report

Orbit 07842

Creation date: 2024-06-27T15:24:40.511258
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/AS1G06_077T02_9000001076_07842cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07842cztM0_level2_quad_clean.evt
Size (bytes)518,152,32098,161,920
Size494.1 MB 93.6 MB
Events in quadrant A3,265,743625,113
Events in quadrant B3,644,771642,674
Events in quadrant C4,896,519632,175
Events in quadrant D3,424,991600,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142223
B0153202
C0192312
D0148792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6777630.929615%
B67771452.139590%
C67772834.175889%
D6777670.988638%

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 8947 6779 2 2 0.02% 0.03%
B 8947 6779 40 40 0.45% 0.59%
C 8947 6779 152 152 1.70% 2.24%
D 8947 6779 19 19 0.21% 0.28%

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 15 234 50608 295.86 830 816 168.3
A 8 15 15455 86.98 830 816 168.3
A 0 226 7886 42.01 830 816 168.3
B 4 239 188056 1166.47 841 822 160.5
B 0 219 63789 392.28 841 822 160.5
B 4 173 36945 225.05 841 822 160.5
C 1 16 1724242 9246.18 806 811 186.4
C 8 229 12992 65.35 806 811 186.4
C 12 4 8415 40.8 806 811 186.4
D 2 152 87912 442.25 807 783 197.0
D 13 137 83612 420.42 807 783 197.0
D 2 136 56910 284.89 807 783 197.0

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