ASTROSAT CZTI

Data Quality Report

Orbit 20170414_G07_046T01_9000001162_level2

Creation date: 2017-09-23T17:16:51.645602
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_046T01_9000001162cztM0_level2.evt modeM0/AS1G07_046T01_9000001162cztM0_level2_quad_clean.evt
Size (bytes)2,453,486,400469,471,680
Size2.3 GB 447.7 MB
Events in quadrant A18,687,9932,950,658
Events in quadrant B17,794,1242,983,862
Events in quadrant C16,024,2972,993,932
Events in quadrant D19,416,6432,869,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0791000
B0764660
C0721800
D0823630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07160
B07160
C07160
D07160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3526310292.918073%
B352646081.724138%
C352643520.998185%
D352667612.157886%

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 38056 35274 444 444 1.17% 1.26%
B 38056 35274 80 80 0.21% 0.23%
C 38056 35274 0 0 0.00% 0.00%
D 38056 35274 271 271 0.71% 0.77%

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 15 236 1259903 1476.73 4175 4095 850.4
A 15 239 764836 894.57 4175 4095 850.4
A 14 111 466966 544.3 4175 4095 850.4
B 0 214 379935 466.88 4214 4116 805.0
B 4 173 359386 441.35 4214 4116 805.0
B 10 16 220753 269.13 4214 4116 805.0
C 13 61 31498 28.8 4098 4114 951.0
C 8 128 23412 20.29 4098 4114 951.0
C 8 208 13804 10.19 4098 4114 951.0
D 2 152 950090 891.05 4047 3960 1061.8
D 9 102 807855 757.1 4047 3960 1061.8
D 1 52 671185 628.38 4047 3960 1061.8

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