ASTROSAT CZTI

Data Quality Report

Orbit 17845

Creation date: 2024-06-27T17:41:59.346131
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_101T06_9000002656_17845cztM0_level2.evt modeM0/AS1A05_101T06_9000002656_17845cztM0_level2_quad_clean.evt
Size (bytes)390,021,12083,344,320
Size372.0 MB 79.5 MB
Events in quadrant A2,748,586542,343
Events in quadrant B3,056,535553,915
Events in quadrant C2,721,065522,592
Events in quadrant D2,898,225506,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119031
B0127101
C0117301
D0125331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5693360.632356%
B5693621.089057%
C5693671.176884%
D5693390.685052%

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 6944 5695 4 4 0.06% 0.07%
B 6944 5695 11 11 0.16% 0.19%
C 6944 5695 0 0 0.00% 0.00%
D 6944 5695 22 22 0.32% 0.39%

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 15 174 29898 205.69 704 689 142.0
A 14 238 7088 45.06 704 689 142.0
A 0 226 6211 38.89 704 689 142.0
B 15 35 87592 652.59 710 696 133.2
B 0 189 52608 389.86 710 696 133.2
B 0 244 28964 212.29 710 696 133.2
C 14 238 106076 676.78 668 671 155.7
C 3 233 6087 34.77 668 671 155.7
C 13 61 4860 26.89 668 671 155.7
D 7 238 265747 1608.3 671 650 164.8
D 2 234 25785 152.49 671 650 164.8
D 15 0 16490 96.1 671 650 164.8

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