ASTROSAT CZTI

Data Quality Report

Orbit 11173

Creation date: 2024-06-27T16:09:21.068601
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/AS1A04_049T01_9000001632_11173cztM0_level2.evt modeM0/AS1A04_049T01_9000001632_11173cztM0_level2_quad_clean.evt
Size (bytes)291,288,96045,872,640
Size277.8 MB 43.7 MB
Events in quadrant A2,390,463291,395
Events in quadrant B2,851,689283,898
Events in quadrant C1,514,018307,746
Events in quadrant D1,851,126282,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08119
B08218
C08218
D08319

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119122658
B0130992492
C082431695
D094431886

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31231464.674992%
B315144113.995557%
C3153210.666032%
D3144531.685751%

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 4788 3184 47 47 0.98% 1.48%
B 4790 3213 238 238 4.97% 7.41%
C 4530 3208 0 0 0.00% 0.00%
D 4807 3207 9 9 0.19% 0.28%

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 8 5 405312 5139.01 385 377 78.8
A 8 15 394952 5007.53 385 377 78.8
A 14 238 100009 1264.43 385 377 78.8
B 4 239 653494 9104.86 377 368 71.7
B 10 245 414068 5767.16 377 368 71.7
B 10 16 187735 2611.98 377 368 71.7
C 13 61 2937 28.24 387 389 90.2
C 14 234 1735 14.92 387 389 90.2
C 1 3 1492 12.23 387 389 90.2
D 10 157 96310 1059.57 377 366 90.6
D 13 152 71582 786.48 377 366 90.6
D 2 14 70582 775.44 377 366 90.6

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