ASTROSAT CZTI

Data Quality Report

Orbit 20235

Creation date: 2024-06-27T18:12:48.534340
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/AS1T03_123T01_9000003000_20235cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20235cztM0_level2_quad_clean.evt
Size (bytes)471,991,68090,593,280
Size450.1 MB 86.4 MB
Events in quadrant A3,415,720592,155
Events in quadrant B3,444,688602,768
Events in quadrant C3,353,053556,384
Events in quadrant D3,650,490549,809

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137293
B0138292
C0136022
D0146322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6342791.245664%
B63421021.608325%
C6342981.545254%
D63421161.829076%

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 7637 6344 2 2 0.03% 0.03%
B 7637 6344 3 3 0.04% 0.05%
C 7637 6344 0 0 0.00% 0.00%
D 7637 6344 49 49 0.64% 0.77%

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 4 2 31966 178.8 879 865 173.9
A 0 226 7606 38.75 879 865 173.9
A 3 137 6706 33.58 879 865 173.9
B 12 111 19333 113.63 869 850 162.7
B 11 111 17248 100.81 869 850 162.7
B 14 111 16167 94.17 869 850 162.7
C 14 238 132877 696.68 821 828 189.5
C 9 54 10812 52.67 821 828 189.5
C 3 233 8089 38.31 821 828 189.5
D 1 52 225312 1104.66 840 818 203.2
D 11 176 168376 824.5 840 818 203.2
D 12 218 68999 335.5 840 818 203.2

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