ASTROSAT CZTI

Data Quality Report

Orbit 20200808_A09_143T03_9000003794_level2

Creation date: 2021-01-09T09:17:36.460437
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/AS1A09_143T03_9000003794cztM0_level2_bc.evt modeM0/AS1A09_143T03_9000003794cztM0_level2_quad_clean.evt
Size (bytes)1,923,909,120799,980,480
Size1.8 GB 762.9 MB
Events in quadrant A13,318,9915,112,729
Events in quadrant B12,365,3715,288,442
Events in quadrant C15,297,5974,999,595
Events in quadrant D13,449,6494,974,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01215420
B01184500
C01320140
D01216930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011420
B011420
C011420
D011420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562286191.100875%
B562295010.890999%
C5622918473.284782%
D562296601.173772%

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 70445 56232 38 38 0.05% 0.07%
B 70445 56232 1 1 0.00% 0.00%
C 70445 56232 33 33 0.05% 0.06%
D 70445 56230 31 31 0.04% 0.06%

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 13 1332012 2014.6 3098 3048 659.7
A 13 254 89053 130.38 3098 3048 659.7
A 0 226 19957 25.63 3098 3048 659.7
B 0 230 187056 312.44 3165 3095 588.8
B 8 61 20440 29.46 3165 3095 588.8
B 0 219 17653 24.73 3165 3095 588.8
C 4 254 2977567 4190.23 3017 3007 709.9
C 3 233 517640 724.96 3017 3007 709.9
C 2 16 227107 315.69 3017 3007 709.9
D 12 233 595286 846.06 3070 2985 700.1
D 1 52 288776 408.23 3070 2985 700.1
D 11 176 273076 385.81 3070 2985 700.1

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