ASTROSAT CZTI

Data Quality Report

Orbit 31037

Creation date: 2024-06-27T20:22:36.320644
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_071T63_9000004486_31037cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31037cztM0_level2_quad_clean.evt
Size (bytes)254,960,64048,787,200
Size243.1 MB 46.5 MB
Events in quadrant A1,525,361325,425
Events in quadrant B2,444,385324,071
Events in quadrant C1,662,564309,846
Events in quadrant D1,885,283305,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062611
B092961
C067291
D077491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2973260.874538%
B2973953.195425%
C2973762.556340%
D2973110.369997%

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 3938 2973 0 0 0.00% 0.00%
B 3938 2973 11 11 0.28% 0.37%
C 3938 2973 5 5 0.13% 0.17%
D 3938 2974 1 1 0.03% 0.03%

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 13 254 6230 72.09 394 385 81.1
A 3 137 4154 46.49 394 385 81.1
A 0 226 3311 36.09 394 385 81.1
B 6 159 803484 10421.22 388 378 77.1
B 4 171 37184 477.6 388 378 77.1
B 0 190 17586 223.29 388 378 77.1
C 0 10 62765 702.46 373 375 88.8
C 14 238 60286 674.55 373 375 88.8
C 3 233 58910 659.06 373 375 88.8
D 8 195 356876 3765.94 379 370 94.7
D 13 174 59300 622.5 379 370 94.7
D 2 250 13876 142.67 379 370 94.7

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