ASTROSAT CZTI

Data Quality Report

Orbit 22231

Creation date: 2024-06-27T18:38:20.891916
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/AS1A07_018T02_9000003288_22231cztM0_level2.evt modeM0/AS1A07_018T02_9000003288_22231cztM0_level2_quad_clean.evt
Size (bytes)363,752,64062,951,040
Size346.9 MB 60.0 MB
Events in quadrant A2,569,571396,965
Events in quadrant B2,528,515409,107
Events in quadrant C2,481,428382,745
Events in quadrant D3,098,308368,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106061
B0105021
C0104041
D0126131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4970220.442656%
B4970220.442656%
C4970260.523139%
D4970390.784708%

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 4970 4970 6 6 0.12% 0.12%
B 4970 4970 0 0 0.00% 0.00%
C 4970 4970 0 0 0.00% 0.00%
D 4970 4970 5 5 0.10% 0.10%

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 4 2 96876 751.37 641 627 128.1
A 13 254 7350 52.48 641 627 128.1
A 0 226 5497 38.02 641 627 128.1
B 4 216 14403 113.58 640 626 121.3
B 12 111 14325 112.93 640 626 121.3
B 11 111 12926 101.4 640 626 121.3
C 14 238 99561 699.15 609 614 141.5
C 0 10 5077 31.54 609 614 141.5
C 13 61 4138 24.9 609 614 141.5
D 2 16 707131 4733.92 614 598 149.2
D 1 52 34662 228.24 614 598 149.2
D 2 136 19613 127.4 614 598 149.2

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