ASTROSAT CZTI

Data Quality Report

Orbit 39123

Creation date: 2024-06-27T22:00:43.718884
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/AS1A12_044T04_9000005434_39123cztM0_level2.fits modeM0/AS1A12_044T04_9000005434_39123cztM0_level2_quad_clean.evt
Size (bytes)2,038,478,400492,387,840
Size1.9 GB 469.6 MB
Events in quadrant A16,212,0353,321,129
Events in quadrant B15,321,6853,394,923
Events in quadrant C14,369,6093,238,526
Events in quadrant D27,232,5832,886,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0663487
B0658956
C0614986
D01014656

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A300623461.150955%
B300624041.343889%
C30062370.123079%
D3006215495.152684%

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 38662 30068 262 262 0.68% 0.87%
B 38662 30068 225 225 0.58% 0.75%
C 38662 30068 13 13 0.03% 0.04%
D 38662 30068 1385 1385 3.58% 4.61%

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 10 83 2138174 3181.5 3322 3260 671.0
A 13 248 1166951 1734.16 3322 3260 671.0
A 13 254 39544 54.07 3322 3260 671.0
B 5 172 1195191 1898.03 3297 3199 628.0
B 0 213 237412 372.94 3297 3199 628.0
B 0 186 214641 336.68 3297 3199 628.0
C 15 214 1249191 1661.45 3232 3243 749.9
C 9 187 336901 444.93 3232 3243 749.9
C 3 233 130112 169.18 3232 3243 749.9
D 12 235 10740344 13865.81 3183 3090 774.4
D 2 249 1117439 1439.04 3183 3090 774.4
D 13 171 907815 1168.34 3183 3090 774.4

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