ASTROSAT CZTI

Data Quality Report

Orbit 20804

Creation date: 2024-06-27T18:19:46.912774
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_013T01_9000003070_20804cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20804cztM0_level2_quad_clean.evt
Size (bytes)592,505,280100,437,120
Size565.1 MB 95.8 MB
Events in quadrant A3,225,341660,603
Events in quadrant B3,504,918653,417
Events in quadrant C3,231,260635,770
Events in quadrant D7,516,046611,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141791
B0148031
C0142151
D0270771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6895530.768673%
B68961001.450116%
C6895691.000725%
D68952643.828861%

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 7110 6896 0 0 0.00% 0.00%
B 7111 6896 3 3 0.04% 0.04%
C 7110 6896 0 0 0.00% 0.00%
D 7110 6896 323 323 4.54% 4.68%

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 0 226 7336 38.34 839 818 170.0
A 3 137 6779 35.06 839 818 170.0
A 12 194 6065 30.86 839 818 170.0
B 0 189 73169 460.42 826 804 157.2
B 0 182 35599 221.38 826 804 157.2
B 0 190 29184 180.57 826 804 157.2
C 14 238 124425 665.59 792 797 185.7
C 3 233 14107 71.66 792 797 185.7
C 13 61 5629 26.01 792 797 185.7
D 1 20 4153481 21183.62 803 781 196.0
D 9 1 81325 410.87 803 781 196.0
D 13 153 66188 333.65 803 781 196.0

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