ASTROSAT CZTI

Data Quality Report

Orbit 16807

Creation date: 2024-06-27T17:27:52.391818
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/AS1A05_004T04_9000002494_16807cztM0_level2.evt modeM0/AS1A05_004T04_9000002494_16807cztM0_level2_quad_clean.evt
Size (bytes)519,099,840105,413,760
Size495.1 MB 100.5 MB
Events in quadrant A4,191,241683,638
Events in quadrant B3,654,104701,442
Events in quadrant C3,389,838673,371
Events in quadrant D4,025,436661,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168643
B0151042
C0142382
D0162642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67783845.665388%
B6778901.327825%
C67781141.681912%
D67781121.652405%

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 7719 6780 191 191 2.47% 2.82%
B 7719 6780 2 2 0.03% 0.03%
C 7719 6780 0 0 0.00% 0.00%
D 7719 6780 32 32 0.41% 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 15 174 901979 5353.98 842 827 168.3
A 9 143 36968 214.72 842 827 168.3
A 15 190 17460 98.82 842 827 168.3
B 15 35 267940 1649.9 843 821 161.9
B 0 189 31121 187.15 843 821 161.9
B 12 111 18543 109.46 843 821 161.9
C 14 238 127226 667.86 815 820 189.3
C 3 233 79622 416.35 815 820 189.3
C 13 61 5836 26.5 815 820 189.3
D 1 52 727180 3568.74 831 807 203.5
D 13 248 66449 322.51 831 807 203.5
D 12 218 40419 194.62 831 807 203.5

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