ASTROSAT CZTI

Data Quality Report

Orbit 24170

Creation date: 2024-06-27T19:03:02.457683
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/AS1A07_067T01_9000003578_24170cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24170cztM0_level2_quad_clean.evt
Size (bytes)568,169,28095,785,920
Size541.8 MB 91.3 MB
Events in quadrant A3,071,897633,610
Events in quadrant B3,163,935656,519
Events in quadrant C3,130,329623,435
Events in quadrant D7,410,104543,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131802
B0134542
C0133602
D0265202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347170.267843%
B6347290.456909%
C6347500.787774%
D6347153624.200410%

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 7547 6348 0 0 0.00% 0.00%
B 7547 6348 6 6 0.08% 0.09%
C 7547 6348 0 0 0.00% 0.00%
D 7547 6348 1304 1304 17.28% 20.54%

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 9756 56.43 797 783 159.0
A 0 226 6734 37.42 797 783 159.0
A 3 137 6605 36.61 797 783 159.0
B 4 52 19196 121.89 801 782 151.1
B 12 111 17877 113.16 801 782 151.1
B 11 111 15419 96.89 801 782 151.1
C 14 238 123461 691.69 766 771 177.4
C 0 239 11530 60.66 766 771 177.4
C 7 247 7793 39.59 766 771 177.4
D 7 238 4504453 26708.66 698 678 168.6
D 8 195 212266 1254.78 698 678 168.6
D 1 52 53421 312.78 698 678 168.6

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