ASTROSAT CZTI

Data Quality Report

Orbit 30121

Creation date: 2024-06-27T20:11:09.949400
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_097T01_9000004334_30121cztM0_level2.evt modeM0/AS1A10_097T01_9000004334_30121cztM0_level2_quad_clean.evt
Size (bytes)582,822,720114,361,920
Size555.8 MB 109.1 MB
Events in quadrant A3,168,003761,070
Events in quadrant B5,036,105774,402
Events in quadrant C3,652,242758,766
Events in quadrant D5,373,541734,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132592
B0191602
C0149252
D0201502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6234290.465191%
B6234550.882259%
C62341031.652230%
D6234981.572024%

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 7519 6235 3 3 0.04% 0.05%
B 7519 6235 1 1 0.01% 0.02%
C 7519 6235 0 0 0.00% 0.00%
D 7519 6235 15 15 0.20% 0.24%

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 8 192 26805 161.08 814 800 161.4
A 13 254 11535 66.49 814 800 161.4
A 3 137 7451 41.2 814 800 161.4
B 6 159 1787774 11771.91 814 794 151.8
B 0 190 47670 308.8 814 794 151.8
B 12 111 17945 112.98 814 794 151.8
C 3 233 318784 1702.19 809 817 186.8
C 14 238 144807 770.83 809 817 186.8
C 14 254 20614 105.98 809 817 186.8
D 1 52 1972554 9851.89 803 786 200.1
D 8 195 155772 774.38 803 786 200.1
D 13 104 99050 490.97 803 786 200.1

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