ASTROSAT CZTI

Data Quality Report

Orbit 06902

Creation date: 2024-06-27T15:12:51.938305
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/AS1A02_005T01_9000000948_06902cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06902cztM0_level2_quad_clean.evt
Size (bytes)465,963,84079,214,400
Size444.4 MB 75.5 MB
Events in quadrant A3,314,058487,603
Events in quadrant B3,487,580492,739
Events in quadrant C3,292,956484,651
Events in quadrant D3,563,659468,165

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140233
B0145932
C0139662
D0149502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6675791.183521%
B6675701.048689%
C6675610.913858%
D66751061.588015%

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 7890 6676 0 0 0.00% 0.00%
B 7890 6676 0 0 0.00% 0.00%
C 7890 6676 4 4 0.05% 0.06%
D 7890 6676 31 31 0.39% 0.46%

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 8 15 30208 173.19 847 830 169.6
A 13 14 10051 54.36 847 830 169.6
A 0 23 8884 47.48 847 830 169.6
B 4 173 48606 301.42 842 823 158.5
B 0 214 43430 268.77 842 823 158.5
B 0 219 41233 254.91 842 823 158.5
C 9 54 69318 368.97 812 818 185.6
C 9 247 48318 255.86 812 818 185.6
C 13 61 6528 30.75 812 818 185.6
D 2 216 316502 1584.52 819 794 199.2
D 5 97 30085 147.01 819 794 199.2
D 7 55 28628 139.7 819 794 199.2

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