ASTROSAT CZTI

Data Quality Report

Orbit 20170927_G07_003T02_9000001564_level2

Creation date: 2017-10-18T16:54:36.222204
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1G07_003T02_9000001564cztM0_level2.evt modeM0/AS1G07_003T02_9000001564cztM0_level2_quad_clean.evt
Size (bytes)2,727,216,000367,044,480
Size2.5 GB 350.0 MB
Events in quadrant A26,152,6422,181,470
Events in quadrant B21,895,5332,301,907
Events in quadrant C13,574,2222,361,989
Events in quadrant D18,958,2272,213,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0976590
B0847480
C0616290
D0766880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29918365912.230096%
B2992023427.827540%
C299202380.795455%
D2992011323.783422%

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 34676 29923 2621 2621 7.56% 8.76%
B 34676 29923 1327 1327 3.83% 4.43%
C 34676 29925 19 19 0.05% 0.06%
D 34676 29924 830 830 2.39% 2.77%

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 8 5 12896510 19272.11 3337 3269 669.0
A 4 2 328589 486.27 3337 3269 669.0
A 15 174 32897 44.29 3337 3269 669.0
B 4 239 7506381 11521.73 3450 3369 651.2
B 15 204 565249 862.83 3450 3369 651.2
B 0 214 186918 281.86 3450 3369 651.2
C 14 234 183240 228.16 3427 3443 788.0
C 13 61 25272 27.7 3427 3443 788.0
C 8 222 18837 19.53 3427 3443 788.0
D 1 52 1472940 1825.8 3373 3291 804.9
D 12 233 948767 1174.6 3373 3291 804.9
D 13 138 914555 1132.1 3373 3291 804.9

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