ASTROSAT CZTI

Data Quality Report

Orbit 25911

Creation date: 2024-06-27T19:22:43.201364
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/AS1A07_068T01_9000003756_25911cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25911cztM0_level2_quad_clean.evt
Size (bytes)697,152,96096,661,440
Size664.9 MB 92.2 MB
Events in quadrant A8,586,327560,688
Events in quadrant B3,381,970672,004
Events in quadrant C3,287,339627,011
Events in quadrant D5,422,786617,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298990
B0140720
C0138410
D0205430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6435175027.195027%
B6434520.808206%
C6434661.025800%
D64343775.859496%

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 7730 6436 1423 1423 18.41% 22.11%
B 7729 6435 3 3 0.04% 0.05%
C 7729 6435 0 0 0.00% 0.00%
D 7729 6435 321 321 4.15% 4.99%

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 0 13 5649937 37805.46 756 744 149.4
A 12 16 15974 101.92 756 744 149.4
A 13 254 8065 48.99 756 744 149.4
B 10 245 75392 468.69 836 816 159.1
B 0 190 21102 127.49 836 816 159.1
B 0 229 18849 113.33 836 816 159.1
C 14 238 129623 702.44 790 797 183.4
C 3 233 79230 427.67 790 797 183.4
C 13 61 5435 25.29 790 797 183.4
D 1 52 1314087 6912.74 798 779 190.0
D 7 80 1047888 5511.57 798 779 190.0
D 2 234 25311 129.13 798 779 190.0

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