ASTROSAT CZTI

Data Quality Report

Orbit 32227

Creation date: 2024-06-27T20:37:49.762958
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/AS1A10_057T01_9000004692_32227cztM0_level2.evt modeM0/AS1A10_057T01_9000004692_32227cztM0_level2_quad_clean.evt
Size (bytes)627,523,20098,182,080
Size598.5 MB 93.6 MB
Events in quadrant A3,434,502664,034
Events in quadrant B5,806,890665,314
Events in quadrant C4,939,312490,080
Events in quadrant D4,323,034640,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150742
B0229141
C0197951
D0177261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73541772.406853%
B73543264.432962%
C7354382852.053304%
D73541882.556432%

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 7474 7357 0 0 0.00% 0.00%
B 7474 7357 58 58 0.78% 0.79%
C 7474 7356 1 1 0.01% 0.01%
D 7474 7357 52 52 0.70% 0.71%

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 13 254 13759 72.02 883 866 179.0
A 15 174 11081 57.06 883 866 179.0
A 13 6 10811 55.56 883 866 179.0
B 6 159 2004976 12007.03 867 844 166.9
B 5 172 213221 1272.38 867 844 166.9
B 0 190 62825 371.34 867 844 166.9
C 14 254 1328420 9626.96 579 581 137.9
C 14 238 1079625 7823.17 579 581 137.9
C 3 233 236168 1708.02 579 581 137.9
D 8 195 671082 3269.67 852 825 205.0
D 12 218 121762 589.96 852 825 205.0
D 13 249 114399 554.04 852 825 205.0

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