ASTROSAT CZTI

Data Quality Report

Orbit 25885

Creation date: 2024-06-27T19:22:28.534901
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_068T01_9000003756_25885cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25885cztM0_level2_quad_clean.evt
Size (bytes)536,693,76096,220,800
Size511.8 MB 91.8 MB
Events in quadrant A3,909,546616,579
Events in quadrant B3,472,459626,316
Events in quadrant C4,427,759575,306
Events in quadrant D3,951,089589,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161420
B0149890
C0180790
D0168390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7271921.265301%
B7271530.728923%
C72713234.442305%
D7271640.880209%

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 7696 7272 28 28 0.36% 0.39%
B 7696 7272 0 0 0.00% 0.00%
C 7696 7272 151 151 1.96% 2.08%
D 7696 7272 34 34 0.44% 0.47%

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 0 13 517360 2920.32 879 862 176.9
A 13 254 11561 60.49 879 862 176.9
A 3 137 8263 41.84 879 862 176.9
B 12 111 20956 119.73 873 849 167.9
B 11 111 18829 107.06 873 849 167.9
B 0 219 17556 99.48 873 849 167.9
C 3 233 955034 4940.34 822 824 193.1
C 14 238 131605 677.11 822 824 193.1
C 7 238 123481 635.04 822 824 193.1
D 1 52 536005 2655.72 843 820 201.5
D 5 223 101301 498.61 843 820 201.5
D 7 80 92925 457.05 843 820 201.5

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