ASTROSAT CZTI

Data Quality Report

Orbit 11359

Creation date: 2024-06-27T16:11:47.174643
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/AS1G08_062T01_9000001660_11359cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11359cztM0_level2_quad_clean.evt
Size (bytes)527,443,20086,374,080
Size503.0 MB 82.4 MB
Events in quadrant A2,966,930573,281
Events in quadrant B5,367,583521,324
Events in quadrant C2,739,252563,489
Events in quadrant D4,487,151532,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129522
B0200961
C0124401
D0173911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6089530.870422%
B608979112.990639%
C6089230.377730%
D60894577.505337%

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 7209 6090 11 11 0.15% 0.18%
B 7209 6090 506 506 7.02% 8.31%
C 7209 6090 1 1 0.01% 0.02%
D 7209 6089 322 322 4.47% 5.29%

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 15 174 101482 688.22 724 709 146.4
A 1 162 30181 201.28 724 709 146.4
A 1 178 16042 104.71 724 709 146.4
B 3 64 1561945 12257.64 672 655 127.4
B 4 239 1027037 8058.1 672 655 127.4
B 15 204 66390 516.08 672 655 127.4
C 14 234 5954 32.39 700 704 162.1
C 13 61 5220 27.86 700 704 162.1
C 8 222 3011 14.23 700 704 162.1
D 10 253 1307140 8061.01 679 661 162.1
D 1 52 262947 1618.31 679 661 162.1
D 2 120 82097 502.46 679 661 162.1

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