ASTROSAT CZTI

Data Quality Report

Orbit 20176

Creation date: 2024-06-27T18:12:05.148000
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/AS1C04_001T01_9000002994_20176cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20176cztM0_level2_quad_clean.evt
Size (bytes)513,838,080132,837,120
Size490.0 MB 126.7 MB
Events in quadrant A3,676,199919,683
Events in quadrant B3,374,370929,247
Events in quadrant C3,829,291875,429
Events in quadrant D4,258,696863,543

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148901
B0138721
C0153062
D0166561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62441262.017937%
B6244841.345291%
C6243851.361525%
D62431442.306583%

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 7524 6245 50 50 0.66% 0.80%
B 7524 6245 22 22 0.29% 0.35%
C 7523 6244 1 1 0.01% 0.02%
D 7523 6244 107 107 1.42% 1.71%

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 14 238 574128 3582.23 804 791 160.1
A 13 254 9723 55.81 804 791 160.1
A 0 226 7047 39.09 804 791 160.1
B 5 172 52544 351.09 797 780 147.4
B 6 36 50898 339.93 797 780 147.4
B 0 189 36290 240.85 797 780 147.4
C 3 233 762935 4382.48 755 760 173.9
C 14 238 121845 696.23 755 760 173.9
C 13 61 5304 26.13 755 760 173.9
D 1 52 829750 4510.04 768 746 183.8
D 7 238 317598 1723.77 768 746 183.8
D 1 20 84166 453.83 768 746 183.8

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