ASTROSAT CZTI

Data Quality Report

Orbit 17570

Creation date: 2024-06-27T17:38:06.795350
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_012T02_9000002602_17570cztM0_level2.evt modeM0/AS1A05_012T02_9000002602_17570cztM0_level2_quad_clean.evt
Size (bytes)428,106,240100,681,920
Size408.3 MB 96.0 MB
Events in quadrant A3,136,313670,969
Events in quadrant B3,152,320674,327
Events in quadrant C3,148,891633,255
Events in quadrant D3,096,386628,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132742
B0132972
C0132652
D0135282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345570.898345%
B6345430.677699%
C6345691.087470%
D6345480.756501%

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 7570 6346 28 28 0.37% 0.44%
B 7570 6346 2 2 0.03% 0.03%
C 7570 6346 8 8 0.11% 0.13%
D 7570 6346 21 21 0.28% 0.33%

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 83312 526.04 790 775 156.9
A 14 237 9616 56.35 790 775 156.9
A 0 226 6995 39.64 790 775 156.9
B 7 220 30035 200.04 786 767 146.3
B 12 111 17058 111.34 786 767 146.3
B 15 201 16611 108.29 786 767 146.3
C 14 238 117295 679.14 742 748 171.6
C 3 233 71855 414.35 742 748 171.6
C 0 207 52000 298.66 742 748 171.6
D 13 189 151244 822.81 756 734 182.9
D 10 70 30239 161.3 756 734 182.9
D 2 234 26964 143.39 756 734 182.9

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