ASTROSAT CZTI

Data Quality Report

Orbit 18313

Creation date: 2024-06-27T17:48:12.789727
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/AS1A06_006T01_9000002720_18313cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18313cztM0_level2_quad_clean.evt
Size (bytes)1,733,817,600305,170,560
Size1.6 GB 291.0 MB
Events in quadrant A10,885,7261,973,525
Events in quadrant B11,802,9251,980,825
Events in quadrant C11,013,1461,941,663
Events in quadrant D17,352,3771,862,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04360
B04360
C04360
D04360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451544
B0477444
C0456544
D0660634

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215813911.811779%
B215825432.515986%
C215825142.381614%
D2158211845.486053%

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 25936 21585 0 0 0.00% 0.00%
B 25937 21586 71 71 0.27% 0.33%
C 25937 21586 1 1 0.00% 0.00%
D 25937 21586 880 880 3.39% 4.08%

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 0 226 25132 39.65 2828 2771 564.0
A 12 194 20882 32.11 2828 2771 564.0
A 3 137 19899 30.37 2828 2771 564.0
B 7 220 462016 870.54 2807 2743 527.6
B 12 18 104517 192.91 2807 2743 527.6
B 0 197 84342 154.67 2807 2743 527.6
C 14 238 419258 667.39 2705 2728 624.1
C 3 233 39690 59.22 2705 2728 624.1
C 0 207 21901 30.72 2705 2728 624.1
D 7 238 3163785 4810.16 2718 2646 657.2
D 1 52 1847938 2807.89 2718 2646 657.2
D 13 168 1633537 2481.65 2718 2646 657.2

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