ASTROSAT CZTI

Data Quality Report

Orbit 25500

Creation date: 2024-06-27T19:18:21.948702
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/AS1A08_003T17_9000003720_25500cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25500cztM0_level2_quad_clean.evt
Size (bytes)466,228,80083,090,880
Size444.6 MB 79.2 MB
Events in quadrant A3,166,714529,521
Events in quadrant B3,311,713539,367
Events in quadrant C3,181,972505,450
Events in quadrant D4,014,832485,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134190
B0138400
C0134090
D0161510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546220.336083%
B6546340.519401%
C6546500.763825%
D65461682.566453%

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 7606 6547 0 0 0.00% 0.00%
B 7606 6547 2 2 0.03% 0.03%
C 7606 6547 0 0 0.00% 0.00%
D 7606 6547 129 129 1.70% 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 13 254 9516 53.12 820 803 164.0
A 3 137 7436 40.44 820 803 164.0
A 0 226 6978 37.64 820 803 164.0
B 5 235 81215 511.75 819 799 157.1
B 12 111 19224 117.25 819 799 157.1
B 11 111 17154 104.08 819 799 157.1
C 14 238 124021 671.75 781 786 183.5
C 2 16 9013 44.84 781 786 183.5
C 13 61 5399 25.15 781 786 183.5
D 1 52 506103 2646.29 779 757 191.0
D 12 233 371664 1942.29 779 757 191.0
D 8 195 149370 778.23 779 757 191.0

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