ASTROSAT CZTI

Data Quality Report

Orbit 20611

Creation date: 2024-06-27T18:17:23.161309
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/AS1A06_003T04_9000003046_20611cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20611cztM0_level2_quad_clean.evt
Size (bytes)502,585,92062,213,760
Size479.3 MB 59.3 MB
Events in quadrant A3,323,094372,549
Events in quadrant B3,662,708375,999
Events in quadrant C3,477,790360,973
Events in quadrant D4,350,489354,929

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136491
B0147471
C0142061
D0168892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60001001.666667%
B60011382.299617%
C60011191.983003%
D60001732.883333%

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 7310 6001 4 4 0.05% 0.07%
B 7311 6002 14 14 0.19% 0.23%
C 7311 6002 0 0 0.00% 0.00%
D 7310 6001 68 68 0.93% 1.13%

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 5 16 61649 362.47 845 830 167.8
A 0 226 7419 39.27 845 830 167.8
A 12 194 6184 31.91 845 830 167.8
B 7 220 175775 1142.32 834 817 153.2
B 15 33 52884 339.95 834 817 153.2
B 0 190 39458 252.29 834 817 153.2
C 8 208 180154 969.75 804 811 184.9
C 14 238 128151 688.55 804 811 184.9
C 3 233 22745 118.6 804 811 184.9
D 1 20 370524 1905.67 820 798 194.0
D 2 165 315048 1619.74 820 798 194.0
D 5 222 235655 1210.52 820 798 194.0

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