ASTROSAT CZTI

Data Quality Report

Orbit 35363

Creation date: 2022-04-13T17:08:57.790930
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/AS1A11_099T01_9000005068_35363cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35363cztM0_level2_quad_clean.evt
Size (bytes)560,217,60052,562,880
Size534.3 MB 50.1 MB
Events in quadrant A3,133,057337,798
Events in quadrant B6,472,233269,484
Events in quadrant C3,180,903331,212
Events in quadrant D3,840,071300,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127453
B0227562
C0122022
D0149212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5024260.517516%
B5024141528.164809%
C50241943.861465%
D50241603.184713%

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 7116 5025 13 13 0.18% 0.26%
B 7116 5025 1109 1109 15.58% 22.07%
C 7116 5025 142 142 2.00% 2.83%
D 7116 5025 146 146 2.05% 2.91%

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 15 169 423876 3174.97 665 654 133.3
A 10 83 109689 817.97 665 654 133.3
A 13 6 15602 112.14 665 654 133.3
B 4 251 3625046 32226.49 593 580 112.5
B 5 172 247183 2192.64 593 580 112.5
B 5 236 199817 1771.49 593 580 112.5
C 0 10 534467 3718.89 624 630 143.5
C 15 214 207800 1443.22 624 630 143.5
C 3 233 4921 29.89 624 630 143.5
D 8 195 774524 5012.0 626 609 154.4
D 12 233 297859 1925.04 626 609 154.4
D 2 152 107090 689.59 626 609 154.4

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