ASTROSAT CZTI

Data Quality Report

Orbit 22709

Creation date: 2024-06-27T18:44:40.525239
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/AS1A08_007T01_9000003362_22709cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22709cztM0_level2_quad_clean.evt
Size (bytes)449,867,520100,373,760
Size429.0 MB 95.7 MB
Events in quadrant A3,091,146671,807
Events in quadrant B3,183,274678,862
Events in quadrant C3,184,023647,179
Events in quadrant D3,766,175630,879

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127491
B0129551
C0131591
D0150641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5884420.713800%
B5884460.781781%
C5884831.410605%
D58851182.005098%

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 7164 5885 0 0 0.00% 0.00%
B 7164 5885 10 10 0.14% 0.17%
C 7164 5885 0 0 0.00% 0.00%
D 7165 5886 66 66 0.92% 1.12%

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 10500 61.62 801 787 157.6
A 0 226 6934 39.0 801 787 157.6
A 12 194 5977 32.93 801 787 157.6
B 0 228 33700 227.46 785 769 144.8
B 4 216 26016 174.38 785 769 144.8
B 12 111 15933 104.74 785 769 144.8
C 14 238 123359 696.3 768 775 176.0
C 10 22 63947 358.83 768 775 176.0
C 13 61 5300 25.7 768 775 176.0
D 1 52 382888 2026.23 784 763 188.6
D 7 238 225069 1189.39 784 763 188.6
D 12 233 91315 480.15 784 763 188.6

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