ASTROSAT CZTI

Data Quality Report

Orbit 29918

Creation date: 2024-06-27T20:08:53.949923
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/AS1A10_053T02_9000004290_29918cztM0_level2.evt modeM0/AS1A10_053T02_9000004290_29918cztM0_level2_quad_clean.evt
Size (bytes)3,270,277,440416,522,880
Size3.0 GB 397.2 MB
Events in quadrant A15,004,2312,790,755
Events in quadrant B23,671,4862,769,521
Events in quadrant C19,622,1782,655,130
Events in quadrant D38,705,8152,311,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0635676
B0924726
C0782576
D01360786

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303822710.891976%
B303824201.382397%
C303828942.942532%
D30382734624.178790%

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 35697 30388 21 21 0.06% 0.07%
B 35697 30388 4 4 0.01% 0.01%
C 35697 30388 20 20 0.06% 0.07%
D 35697 30388 6351 6351 17.79% 20.90%

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 94418 119.43 3841 3762 759.1
A 8 192 72266 90.25 3841 3762 759.1
A 13 254 55256 67.84 3841 3762 759.1
B 6 159 8542516 12030.87 3767 3671 709.7
B 0 190 304864 424.37 3767 3671 709.7
B 12 111 86945 117.33 3767 3671 709.7
C 3 233 4563592 5400.03 3653 3676 844.4
C 14 238 650215 765.66 3653 3676 844.4
C 14 254 93524 106.4 3653 3676 844.4
D 7 80 22092144 27726.66 3398 3310 796.7
D 8 195 1474630 1846.85 3398 3310 796.7
D 1 52 812365 1015.55 3398 3310 796.7

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