ASTROSAT CZTI

Data Quality Report

Orbit 20220222_T05_008T01_9000004956_level2

Creation date: 2022-02-26T20:06:20.798210
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/AS1T05_008T01_9000004956cztM0_level2_bc.evt modeM0/AS1T05_008T01_9000004956cztM0_level2_quad_clean.evt
Size (bytes)8,552,338,5602,086,960,320
Size8.0 GB 1.9 GB
Events in quadrant A35,426,06313,329,302
Events in quadrant B57,252,41912,983,060
Events in quadrant C43,765,42013,255,033
Events in quadrant D111,396,56512,366,740

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033620
B033620
C033620
D033620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05940
B05940
C05940
D05950

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03370160
B04293610
C03497470
D05864220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1646363570.216842%
B16462090775.513911%
C16462811630.706441%
D16461088875.398821%

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 223464 164690 16 16 0.01% 0.01%
B 223463 164641 609 609 0.27% 0.37%
C 223463 164653 193 193 0.09% 0.12%
D 223463 164640 1558 1558 0.70% 0.95%

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 10 83 940092 496.53 8578 8459 1876.3
A 9 143 349621 181.83 8578 8459 1876.3
A 13 6 329060 170.87 8578 8459 1876.3
B 5 172 19647682 11814.81 8405 8226 1662.3
B 5 255 1180604 705.29 8405 8226 1662.3
B 4 232 679059 403.56 8405 8226 1662.3
C 15 214 6548399 3452.73 8298 8247 1894.2
C 0 10 2379661 1251.94 8298 8247 1894.2
C 14 67 1394768 731.98 8298 8247 1894.2
D 8 195 53693851 25170.99 8172 7967 2132.8
D 10 203 3618696 1692.91 8172 7967 2132.8
D 2 250 2911319 1361.26 8172 7967 2132.8

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