ASTROSAT CZTI

Data Quality Report

Orbit 36625

Creation date: 2024-06-27T21:29:21.096980
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_073T02_9000005226_36625cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36625cztM0_level2_quad_clean.evt
Size (bytes)619,758,72076,075,200
Size591.0 MB 72.6 MB
Events in quadrant A2,854,109521,824
Events in quadrant B4,483,775453,725
Events in quadrant C3,439,426518,145
Events in quadrant D7,633,930437,947

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115583
B0164182
C0133082
D0264132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5291240.453600%
B529188116.650917%
C52911723.250803%
D5291112121.186921%

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 9477 5293 9 9 0.09% 0.17%
B 9477 5293 720 720 7.60% 13.60%
C 9477 5293 138 138 1.46% 2.61%
D 9477 5293 1114 1114 11.75% 21.05%

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 205338 1554.3 652 641 131.7
A 15 223 107950 814.82 652 641 131.7
A 9 143 14639 106.29 652 641 131.7
B 5 200 1974670 17585.29 588 575 112.3
B 0 219 59502 524.92 588 575 112.3
B 0 213 41436 363.99 588 575 112.3
C 0 10 399135 2771.52 620 627 143.8
C 0 207 235404 1632.82 620 627 143.8
C 15 214 224465 1556.74 620 627 143.8
D 12 235 4617406 31574.34 596 579 146.2
D 13 171 192145 1310.11 596 579 146.2
D 12 17 138666 944.37 596 579 146.2

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