ASTROSAT CZTI

Data Quality Report

Orbit 11840

Creation date: 2024-06-27T16:19:00.129054
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/AS1A04_088T03_9000001750_11840cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11840cztM0_level2_quad_clean.evt
Size (bytes)493,116,48089,913,600
Size470.3 MB 85.7 MB
Events in quadrant A3,151,822590,014
Events in quadrant B3,917,759589,341
Events in quadrant C2,883,797572,904
Events in quadrant D4,558,602536,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133603
B0156562
C0128312
D0177442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222480.771456%
B62222604.178721%
C6222250.401800%
D62223725.978785%

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 7548 6224 4 4 0.05% 0.06%
B 7548 6224 124 124 1.64% 1.99%
C 7548 6224 7 7 0.09% 0.11%
D 7548 6224 378 378 5.01% 6.07%

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 1 162 79041 509.61 763 750 153.6
A 1 178 38661 246.77 763 750 153.6
A 1 161 34339 218.64 763 750 153.6
B 4 239 500522 3532.0 756 739 141.5
B 15 204 237475 1673.03 756 739 141.5
B 3 64 195498 1376.37 756 739 141.5
C 0 10 18833 107.01 734 739 169.1
C 13 61 5623 28.89 734 739 169.1
C 12 4 1888 6.8 734 739 169.1
D 1 52 1467928 8711.4 710 692 168.4
D 8 195 272959 1616.53 710 692 168.4
D 9 85 50712 296.98 710 692 168.4

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