ASTROSAT CZTI

Data Quality Report

Orbit 13737

Creation date: 2024-06-27T16:45:22.842138
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/AS1G08_062T01_9000002038_13737cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13737cztM0_level2_quad_clean.evt
Size (bytes)438,779,52077,184,000
Size418.5 MB 73.6 MB
Events in quadrant A2,799,305492,308
Events in quadrant B3,049,023487,254
Events in quadrant C2,753,949508,906
Events in quadrant D4,302,937454,057

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118582
B0126001
C0116661
D0166481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5635310.550133%
B56351011.792369%
C5635110.195209%
D56354507.985803%

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 6946 5637 10 10 0.14% 0.18%
B 6946 5637 37 37 0.53% 0.66%
C 6946 5637 0 0 0.00% 0.00%
D 6946 5637 396 396 5.70% 7.03%

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 15 69 74625 524.84 698 686 140.9
A 1 162 14787 100.09 698 686 140.9
A 0 23 14132 95.44 698 686 140.9
B 10 245 220583 1675.75 692 677 131.2
B 3 64 60223 453.76 692 677 131.2
B 0 219 32987 246.21 692 677 131.2
C 3 233 104045 656.36 679 685 157.5
C 13 61 4957 27.13 679 685 157.5
C 4 254 2728 12.97 679 685 157.5
D 5 222 1308760 8287.45 655 637 157.8
D 8 195 173516 1095.25 655 637 157.8
D 13 168 133257 840.19 655 637 157.8

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