ASTROSAT CZTI

Data Quality Report

Orbit 20200324_C05_007T01_9000003588_level2

Creation date: 2020-03-27T12:12:14.997293
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/AS1C05_007T01_9000003588cztM0_level2_bc.evt modeM0/AS1C05_007T01_9000003588cztM0_level2_quad_clean.evt
Size (bytes)2,935,638,720684,616,320
Size2.7 GB 652.9 MB
Events in quadrant A12,797,5194,341,920
Events in quadrant B11,945,4274,435,588
Events in quadrant C23,454,2794,206,364
Events in quadrant D36,989,8393,996,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01174260
B01151900
C01578840
D01960270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011160
B011160
C011160
D011160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5471910671.949963%
B547198831.613699%
C5471924214.424423%
D54719582210.639814%

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 63179 54712 205 205 0.32% 0.37%
B 63179 54710 0 0 0.00% 0.00%
C 63179 54711 223 223 0.35% 0.41%
D 63179 54712 3094 3094 4.90% 5.66%

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 6 16 1132140 1749.12 3015 2960 645.6
A 13 254 75694 112.67 3015 2960 645.6
A 3 1 45872 66.47 3015 2960 645.6
B 0 190 98070 167.89 3050 2979 566.4
B 12 17 90163 153.93 3050 2979 566.4
B 0 230 55085 91.99 3050 2979 566.4
C 7 247 8588242 12646.53 2911 2897 678.9
C 2 16 3511320 5168.04 2911 2897 678.9
C 3 233 123112 177.08 2911 2897 678.9
D 1 52 13212115 19950.01 2877 2778 662.1
D 8 195 9901891 14950.59 2877 2778 662.1
D 1 239 1765950 2662.91 2877 2778 662.1

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