ASTROSAT CZTI

Data Quality Report

Orbit 23617

Creation date: 2024-06-27T18:56:51.296727
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/AS1T03_178T01_9000003488_23617cztM0_level2.evt modeM0/AS1T03_178T01_9000003488_23617cztM0_level2_quad_clean.evt
Size (bytes)585,774,72092,350,080
Size558.6 MB 88.1 MB
Events in quadrant A3,102,514618,950
Events in quadrant B6,211,009538,094
Events in quadrant C3,164,365600,612
Events in quadrant D4,810,102573,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136091
B0228571
C0137591
D0190971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6673300.449573%
B6674121018.130057%
C6674681.018879%
D66743184.764759%

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 7568 6673 0 0 0.00% 0.00%
B 7569 6674 1053 1053 13.91% 15.78%
C 7569 6674 1 1 0.01% 0.01%
D 7569 6674 286 286 3.78% 4.29%

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 9369 52.8 805 790 162.5
A 3 137 7451 40.99 805 790 162.5
A 0 226 6676 36.22 805 790 162.5
B 3 64 3229870 22755.88 731 713 141.9
B 0 229 74019 516.59 731 713 141.9
B 14 207 19166 130.04 731 713 141.9
C 14 238 122010 667.36 769 772 181.7
C 0 10 20957 111.11 769 772 181.7
C 7 247 13229 68.57 769 772 181.7
D 1 52 1954666 10644.0 754 732 183.6
D 2 234 26374 139.68 754 732 183.6
D 9 85 7392 36.28 754 732 183.6

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