ASTROSAT CZTI

Data Quality Report

Orbit 35744

Creation date: 2022-05-10T17:06:36.335845
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/AS1A09_029T07_9000005128_35744cztM0_level2.evt modeM0/AS1A09_029T07_9000005128_35744cztM0_level2_quad_clean.evt
Size (bytes)431,340,48065,208,960
Size411.4 MB 62.2 MB
Events in quadrant A2,947,200397,975
Events in quadrant B3,501,452401,635
Events in quadrant C2,987,313399,153
Events in quadrant D3,237,549374,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124633
B0141982
C0124782
D0137202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57351192.074978%
B57352093.644289%
C5735420.732345%
D57351823.173496%

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 7136 5736 98 98 1.37% 1.71%
B 7136 5736 163 163 2.28% 2.84%
C 7136 5736 38 38 0.53% 0.66%
D 7136 5736 161 161 2.26% 2.81%

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 288098 2204.61 641 629 130.4
A 10 83 151802 1159.35 641 629 130.4
A 13 6 12353 89.91 641 629 130.4
B 5 172 575656 4632.12 635 616 124.1
B 0 189 155279 1245.86 635 616 124.1
B 5 31 133642 1071.56 635 616 124.1
C 15 214 242340 1668.7 624 629 144.8
C 0 10 142879 982.05 624 629 144.8
C 15 208 103041 707.02 624 629 144.8
D 13 249 578402 3815.34 616 597 151.4
D 2 153 40049 260.51 616 597 151.4
D 12 17 35823 232.6 616 597 151.4

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