ASTROSAT CZTI

Data Quality Report

Orbit 20170121_G06_051T01_9000000972_level2

Creation date: 2017-09-22T22:05:04.543925
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/AS1G06_051T01_9000000972cztM0_level2.evt modeM0/AS1G06_051T01_9000000972cztM0_level2_quad_clean.evt
Size (bytes)7,470,633,6001,292,509,440
Size7.0 GB 1.2 GB
Events in quadrant A50,646,4757,991,757
Events in quadrant B53,549,1908,140,338
Events in quadrant C50,662,4057,988,634
Events in quadrant D64,095,9337,617,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02237470
B02301050
C02250430
D02637620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021940
B021940
C021940
D021940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10814716541.529400%
B10813618171.680291%
C10815214691.358274%
D10813642883.965377%

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 123182 108171 9 9 0.01% 0.01%
B 123182 108170 64 64 0.05% 0.06%
C 123182 108171 132 132 0.11% 0.12%
D 123182 108171 2326 2326 1.89% 2.15%

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 15 507169 189.14 12897 12627 2614.7
A 14 111 293419 107.39 12897 12627 2614.7
A 0 226 123542 42.42 12897 12627 2614.7
B 0 219 852534 342.06 12960 12662 2455.4
B 0 214 831221 333.38 12960 12662 2455.4
B 10 246 508798 202.06 12960 12662 2455.4
C 4 254 1124088 381.63 12536 12591 2912.5
C 9 68 437778 145.99 12536 12591 2912.5
C 13 61 97324 29.09 12536 12591 2912.5
D 2 216 10515129 3454.03 12433 12048 3040.8
D 8 195 2213220 723.87 12433 12048 3040.8
D 12 233 1978954 646.83 12433 12048 3040.8

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