ASTROSAT CZTI

Data Quality Report

Orbit 20161010_G06_060T01_9000000726_level2

Creation date: 2016-10-21T08:27:28.535762
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_060T01_9000000726cztM0_level2_bc.evt modeM0/AS1G06_060T01_9000000726cztM0_level2_quad_clean.evt
Size (bytes)1,994,414,400729,109,440
Size1.9 GB 695.3 MB
Events in quadrant A12,024,8744,545,581
Events in quadrant B16,263,7324,574,802
Events in quadrant C12,362,9944,496,457
Events in quadrant D15,581,1624,275,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012480
B012480
C012460
D012460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01261010
B01398140
C01264760
D01372500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A611097061.155313%
B6108511201.833511%
C611035410.885390%
D6109210211.671250%

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 70914 61226 8 8 0.01% 0.01%
B 70914 61225 39 39 0.05% 0.06%
C 70914 61223 9 9 0.01% 0.01%
D 70914 61226 94 94 0.13% 0.15%

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 0 50 168990 248.81 3014 2944 667.3
A 7 16 47643 66.98 3014 2944 667.3
A 0 149 41118 57.2 3014 2944 667.3
B 15 204 2881897 4926.58 3045 2951 584.4
B 4 81 405073 688.13 3045 2951 584.4
B 0 214 387385 657.86 3045 2951 584.4
C 1 16 563981 855.47 2958 2907 655.9
C 14 67 95499 141.17 2958 2907 655.9
C 8 128 30823 42.56 2958 2907 655.9
D 2 136 1635024 2391.26 2952 2833 682.6
D 11 241 494587 720.45 2952 2833 682.6
D 10 15 431003 627.3 2952 2833 682.6

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