ASTROSAT CZTI

Data Quality Report

Orbit 34969

Creation date: 2022-03-17T20:59:53.383450
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/AS1A11_047T09_9000005010_34969cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34969cztM0_level2_quad_clean.evt
Size (bytes)473,757,12090,192,960
Size451.8 MB 86.0 MB
Events in quadrant A2,665,152609,780
Events in quadrant B4,044,631578,829
Events in quadrant C2,904,820594,759
Events in quadrant D4,357,143560,224

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115603
B0155752
C0119482
D0167462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5542110.198484%
B55425179.328762%
C5542450.811981%
D55421372.472032%

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 8888 5544 0 0 0.00% 0.00%
B 8888 5544 404 404 4.55% 7.29%
C 8888 5544 31 31 0.35% 0.56%
D 8888 5544 109 109 1.23% 1.97%

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 71202 524.32 667 655 134.5
A 13 6 12435 87.55 667 655 134.5
A 13 254 9074 62.57 667 655 134.5
B 5 172 1414267 11640.49 630 614 121.4
B 0 190 67100 547.47 630 614 121.4
B 4 232 21071 168.45 630 614 121.4
C 15 214 231371 1540.14 642 647 149.8
C 0 10 135985 903.42 642 647 149.8
C 0 207 16151 103.49 642 647 149.8
D 8 195 1158025 7462.1 642 627 155.1
D 13 249 328625 2114.7 642 627 155.1
D 1 52 80274 513.51 642 627 155.1

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