ASTROSAT CZTI

Data Quality Report

Orbit 11685

Creation date: 2024-06-27T16:16:45.327447
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_037T03_9000001722_11685cztM0_level2.evt modeM0/AS1A04_037T03_9000001722_11685cztM0_level2_quad_clean.evt
Size (bytes)318,058,56036,982,080
Size303.3 MB 35.3 MB
Events in quadrant A2,380,986221,383
Events in quadrant B1,841,178226,460
Events in quadrant C1,580,013225,242
Events in quadrant D3,602,429209,486

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093592
B075912
C070952
D0130692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33333029.060906%
B33332126.360636%
C33331123.360336%
D333352915.871587%

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 3569 3336 25 25 0.70% 0.75%
B 3569 3336 9 9 0.25% 0.27%
C 3569 3336 0 0 0.00% 0.00%
D 3569 3336 336 336 9.41% 10.07%

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 568157 6563.7 415 404 86.5
A 1 162 85744 986.6 415 404 86.5
A 1 178 46326 530.9 415 404 86.5
B 4 239 71713 865.04 416 403 82.4
B 10 252 55880 672.98 416 403 82.4
B 3 189 44446 534.27 416 403 82.4
C 13 61 2942 26.65 405 405 95.2
C 3 202 969 5.92 405 405 95.2
C -1 -1 -1 -1.0 405 405 95.2
D 13 152 1557709 16504.24 386 373 94.4
D 1 52 320414 3391.71 386 373 94.4
D 8 195 173678 1836.64 386 373 94.4

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