ASTROSAT CZTI

Data Quality Report

Orbit 16702

Creation date: 2024-06-27T17:26:25.809402
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_024T01_9000002472_16702cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16702cztM0_level2_quad_clean.evt
Size (bytes)570,504,96071,706,240
Size544.1 MB 68.4 MB
Events in quadrant A4,357,559440,866
Events in quadrant B3,752,627448,100
Events in quadrant C3,737,401432,766
Events in quadrant D5,005,201411,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170923
B0152492
C0152732
D0193452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62743425.451068%
B6274951.514186%
C62741011.609818%
D62745368.543194%

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 7580 6276 149 149 1.97% 2.37%
B 7580 6276 15 15 0.20% 0.24%
C 7580 6276 0 0 0.00% 0.00%
D 7580 6276 168 168 2.22% 2.68%

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 15 174 715151 4038.35 884 871 176.9
A 12 96 145637 818.47 884 871 176.9
A 9 143 48735 270.61 884 871 176.9
B 15 35 81158 488.05 893 874 164.5
B 5 236 54735 327.42 893 874 164.5
B 0 189 35905 212.96 893 874 164.5
C 3 233 192939 970.4 868 879 197.9
C 14 238 136312 684.29 868 879 197.9
C 0 207 16541 79.13 868 879 197.9
D 1 52 1202857 5978.88 826 805 201.0
D 5 222 267720 1327.61 826 805 201.0
D 2 16 215371 1067.23 826 805 201.0

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