ASTROSAT CZTI

Data Quality Report

Orbit 28230

Creation date: 2024-06-27T19:49:25.950271
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/AS1C05_019T04_9000004074_28230cztM0_level2.evt modeM0/AS1C05_019T04_9000004074_28230cztM0_level2_quad_clean.evt
Size (bytes)1,342,762,560259,378,560
Size1.3 GB 247.4 MB
Events in quadrant A7,938,0211,726,446
Events in quadrant B10,006,5421,743,914
Events in quadrant C8,093,7551,657,662
Events in quadrant D13,469,4311,545,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352230
B0411170
C0353670
D0518870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171371951.137889%
B171373662.135730%
C171362341.365546%
D1713814198.279846%

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 19057 17139 1 1 0.01% 0.01%
B 19057 17139 64 64 0.34% 0.37%
C 19057 17140 0 0 0.00% 0.00%
D 19058 17140 1239 1239 6.50% 7.23%

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 48527 114.41 2041 2000 406.7
A 13 254 23990 54.07 2041 2000 406.7
A 3 137 20083 44.47 2041 2000 406.7
B 5 255 1897282 5024.92 2011 1957 377.2
B 0 183 62602 160.78 2011 1957 377.2
B 10 245 55483 141.91 2011 1957 377.2
C 14 238 316666 703.48 1937 1946 447.4
C 3 233 160690 354.83 1937 1946 447.4
C 5 37 43879 93.73 1937 1946 447.4
D 1 52 4842228 10830.11 1897 1844 446.9
D 8 195 401071 893.25 1897 1844 446.9
D 7 80 376276 837.77 1897 1844 446.9

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