ASTROSAT CZTI

Data Quality Report

Orbit 20180817_G08_031T01_9000002314_level2

Creation date: 2018-08-20T11:02:44.840572
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/AS1G08_031T01_9000002314cztM0_level2_bc.evt modeM0/AS1G08_031T01_9000002314cztM0_level2_quad_clean.evt
Size (bytes)1,519,980,480585,679,680
Size1.4 GB 558.5 MB
Events in quadrant A10,271,7293,652,063
Events in quadrant B11,621,3343,690,136
Events in quadrant C9,827,8453,559,361
Events in quadrant D11,015,5003,523,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09820
B09820
C09820
D09820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01001060
B01055050
C01000610
D01023340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A483063000.621041%
B483064861.006086%
C483065271.090962%
D483064290.888088%

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 56977 48304 4 4 0.01% 0.01%
B 56977 48301 2 2 0.00% 0.00%
C 56977 48299 0 0 0.00% 0.00%
D 56977 48301 43 43 0.08% 0.09%

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 0 253 189300 338.78 2576 2528 551.3
A 3 80 38375 65.02 2576 2528 551.3
A 7 16 38280 64.85 2576 2528 551.3
B 4 251 829240 1720.25 2583 2518 480.6
B 0 189 225200 463.36 2583 2518 480.6
B 4 173 183569 376.73 2583 2518 480.6
C 3 233 87757 146.47 2489 2474 582.3
C 7 247 84674 141.18 2489 2474 582.3
C 10 22 43170 69.89 2489 2474 582.3
D 12 110 285381 479.62 2559 2465 589.9
D 1 52 243368 408.39 2559 2465 589.9
D 2 234 217464 364.48 2559 2465 589.9

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