ASTROSAT CZTI

Data Quality Report

Orbit 25288

Creation date: 2024-06-27T19:15:58.224990
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/AS1A09_022T01_9000003702_25288cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25288cztM0_level2_quad_clean.evt
Size (bytes)575,683,200118,874,880
Size549.0 MB 113.4 MB
Events in quadrant A6,485,146768,825
Events in quadrant B3,201,839834,096
Events in quadrant C3,098,426804,923
Events in quadrant D4,253,412783,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231680
B0131230
C0126680
D0167240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5836130722.395476%
B58391492.551807%
C58391672.860079%
D58392303.939031%

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 7138 5838 943 943 13.21% 16.15%
B 7139 5840 8 8 0.11% 0.14%
C 7139 5840 0 0 0.00% 0.00%
D 7139 5840 87 87 1.22% 1.49%

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 6 16 3611022 24661.06 740 726 146.4
A 15 173 13636 88.19 740 726 146.4
A 13 254 9600 60.62 740 726 146.4
B 3 112 105306 741.78 771 754 140.9
B 3 64 44429 309.87 771 754 140.9
B 0 190 25473 175.38 771 754 140.9
C 14 238 121958 698.84 757 764 173.4
C 3 233 6793 34.77 757 764 173.4
C 0 207 6418 32.6 757 764 173.4
D 1 52 600444 3267.56 769 751 183.5
D 12 233 389894 2120.33 769 751 183.5
D 8 195 294362 1599.81 769 751 183.5

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