ASTROSAT CZTI

Data Quality Report

Orbit 20151231_G04_003T01_9000000234_level2

Creation date: 2018-05-16T18:04:12.289527
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/AS1G04_003T01_9000000234cztM0_level2.evt modeM0/AS1G04_003T01_9000000234cztM0_level2_quad_clean.evt
Size (bytes)8,613,561,600844,704,000
Size8.0 GB 805.6 MB
Events in quadrant A77,024,5015,457,354
Events in quadrant B66,292,8855,673,267
Events in quadrant C58,461,4695,567,964
Events in quadrant D55,780,4655,436,924

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010200
B010200
C010200
D010200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02643680
B02325600
C02095140
D02016630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5031119193.814275%
B503116241.240285%
C503111920.381626%
D503113320.659895%

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 56107 50317 9073 9073 16.17% 18.03%
B 56107 50318 3832 3832 6.83% 7.62%
C 56107 50321 1541 1541 2.75% 3.06%
D 56107 50320 1943 1943 3.46% 3.86%

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 15 127 17086480 4701.74 15098 15207 3630.8
A 4 32 1522654 415.18 15098 15207 3630.8
A 15 233 170315 42.72 15098 15207 3630.8
B 8 4 3385729 908.03 15804 15897 3711.2
B 6 53 872034 230.69 15804 15897 3711.2
B 12 52 830162 219.41 15804 15897 3711.2
C 15 241 1885302 472.0 14273 14764 3963.0
C 2 53 425349 103.6 14273 14764 3963.0
C 3 79 186215 43.26 14273 14764 3963.0
D 9 53 1467991 345.24 13896 14396 4210.4
D 9 66 743293 173.12 13896 14396 4210.4
D 13 169 457190 105.17 13896 14396 4210.4

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