ASTROSAT CZTI

Data Quality Report

Orbit 25939

Creation date: 2024-06-27T19:23:03.988342
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_9000003760_25939cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25939cztM0_level2_quad_clean.evt
Size (bytes)879,433,92086,094,720
Size838.7 MB 82.1 MB
Events in quadrant A15,487,366166,870
Events in quadrant B3,200,297707,913
Events in quadrant C3,087,766660,907
Events in quadrant D4,455,840653,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500560
B0132040
C0128310
D0172170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5953582897.900218%
B59541101.847497%
C59531382.318159%
D59533836.433731%

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 7222 5953 5342 5342 73.97% 89.74%
B 7224 5955 0 0 0.00% 0.00%
C 7223 5954 0 0 0.00% 0.00%
D 7223 5954 211 211 2.92% 3.54%

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 14414113 280320.18 255 250 51.4
A 12 16 76690 1486.6 255 250 51.4
A 12 194 12967 247.32 255 250 51.4
B 0 190 55494 370.03 794 777 147.9
B 0 229 32140 212.1 794 777 147.9
B 12 111 17051 110.05 794 777 147.9
C 14 238 123805 706.42 756 762 174.2
C 3 233 19596 108.13 756 762 174.2
C 13 61 5269 25.87 756 762 174.2
D 1 52 1517881 8310.89 765 747 182.5
D 12 233 28661 152.91 765 747 182.5
D 2 234 23215 123.08 765 747 182.5

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