ASTROSAT CZTI

Data Quality Report

Orbit 28055

Creation date: 2024-06-27T19:47:33.555376
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_057T02_9000004054_28055cztM0_level2.evt modeM0/AS1A10_057T02_9000004054_28055cztM0_level2_quad_clean.evt
Size (bytes)584,919,36076,397,760
Size557.8 MB 72.9 MB
Events in quadrant A3,521,308474,060
Events in quadrant B3,482,596471,745
Events in quadrant C3,787,708451,719
Events in quadrant D6,460,328439,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145310
B0144290
C0153450
D0239320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68371111.623519%
B68371251.828287%
C68371702.486471%
D68375327.781191%

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 7682 6837 0 0 0.00% 0.00%
B 7682 6837 1 1 0.01% 0.01%
C 7682 6837 1 1 0.01% 0.01%
D 7682 6837 396 396 5.15% 5.79%

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 13 102775 570.81 886 869 178.5
A 13 254 11717 60.76 886 869 178.5
A 3 137 8291 41.57 886 869 178.5
B 4 52 26725 155.8 873 852 166.1
B 12 111 19889 114.63 873 852 166.1
B 4 200 19287 111.01 873 852 166.1
C 3 233 374684 1905.49 842 847 196.2
C 14 238 133933 678.35 842 847 196.2
C 13 61 5832 25.41 842 847 196.2
D 8 195 2095791 10597.04 837 815 197.7
D 1 52 666913 3369.33 837 815 197.7
D 2 250 463118 2338.47 837 815 197.7

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