ASTROSAT CZTI

Data Quality Report

Orbit 20171027_C03_012T01_9000001642_level2

Creation date: 2017-10-30T15:48:06.218153
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/AS1C03_012T01_9000001642cztM0_level2.evt modeM0/AS1C03_012T01_9000001642cztM0_level2_quad_clean.evt
Size (bytes)3,104,199,360488,664,000
Size2.9 GB 466.0 MB
Events in quadrant A22,426,8523,207,840
Events in quadrant B20,651,0413,298,464
Events in quadrant C15,663,8083,233,467
Events in quadrant D33,078,6442,822,202

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0878660
B0824350
C0679650
D01207820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3258115264.683711%
B3258113494.140450%
C325811950.598508%
D32581521316.000123%

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 40316 32587 910 910 2.26% 2.79%
B 40316 32588 580 580 1.44% 1.78%
C 40316 32588 39 39 0.10% 0.12%
D 40316 32588 4186 4186 10.38% 12.85%

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 14 238 3186836 3983.4 3992 3934 799.0
A 8 5 2070126 2585.84 3992 3934 799.0
A 8 15 543471 675.23 3992 3934 799.0
B 4 239 3794610 5078.28 4034 3951 746.4
B 11 51 504820 671.01 4034 3951 746.4
B 15 204 200716 263.6 4034 3951 746.4
C 9 204 187677 203.08 3949 3990 904.5
C 5 239 70158 73.15 3949 3990 904.5
C 13 61 28843 27.48 3949 3990 904.5
D 13 152 6145486 7143.07 3649 3564 859.8
D 13 104 4181917 4859.43 3649 3564 859.8
D 8 195 2544917 2955.6 3649 3564 859.8

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