ASTROSAT CZTI

Data Quality Report

Orbit 25804

Creation date: 2024-06-27T19:21:37.314627
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_25804cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25804cztM0_level2_quad_clean.evt
Size (bytes)395,187,84093,208,320
Size376.9 MB 88.9 MB
Events in quadrant A3,040,498622,460
Events in quadrant B2,869,796618,394
Events in quadrant C2,839,312584,751
Events in quadrant D2,825,019592,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128880
B0122490
C0122370
D0122810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5788500.863856%
B5789560.967352%
C5789641.105545%
D5789430.742788%

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 6843 5788 5 5 0.07% 0.09%
B 6844 5789 2 2 0.03% 0.03%
C 6844 5789 2 2 0.03% 0.03%
D 6844 5789 12 12 0.18% 0.21%

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 209731 1421.97 732 718 147.0
A 13 254 8712 54.39 732 718 147.0
A 3 1 7976 49.38 732 718 147.0
B 0 190 30387 215.19 718 701 138.0
B 12 111 16788 116.61 718 701 138.0
B 11 111 14946 103.26 718 701 138.0
C 14 238 111352 692.15 687 689 159.9
C 3 233 29021 177.2 687 689 159.9
C 0 207 23106 140.21 687 689 159.9
D 7 80 57681 335.7 706 691 169.8
D 1 52 38344 221.79 706 691 169.8
D 2 234 25794 147.87 706 691 169.8

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