ASTROSAT CZTI

Data Quality Report

Orbit 25862

Creation date: 2024-06-27T19:22:12.407707
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_25862cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25862cztM0_level2_quad_clean.evt
Size (bytes)518,682,240104,489,280
Size494.7 MB 99.6 MB
Events in quadrant A5,863,674674,025
Events in quadrant B3,152,119711,609
Events in quadrant C3,038,181671,105
Events in quadrant D3,239,184680,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217210
B0132230
C0130070
D0138890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61275799.449976%
B6127781.273054%
C6127991.615799%
D6127610.995593%

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 7182 6128 449 449 6.25% 7.33%
B 7182 6128 13 13 0.18% 0.21%
C 7182 6128 0 0 0.00% 0.00%
D 7182 6128 2 2 0.03% 0.03%

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 2920171 19176.51 763 747 152.2
A 13 254 7622 45.16 763 747 152.2
A 3 137 6846 40.06 763 747 152.2
B 10 245 112639 762.91 766 748 146.7
B 12 111 17643 115.2 766 748 146.7
B 0 219 16526 107.58 766 748 146.7
C 14 238 121685 709.54 737 742 170.5
C 3 233 40923 235.73 737 742 170.5
C 13 61 4992 24.93 737 742 170.5
D 1 52 280046 1547.59 758 739 180.5
D 12 233 41865 227.87 758 739 180.5
D 7 80 34801 188.73 758 739 180.5

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