ASTROSAT CZTI

Data Quality Report

Orbit 20346

Creation date: 2024-06-27T18:14:12.677634
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/AS1A05_163T01_9000003010_20346cztM0_level2.evt modeM0/AS1A05_163T01_9000003010_20346cztM0_level2_quad_clean.evt
Size (bytes)448,168,32099,092,160
Size427.4 MB 94.5 MB
Events in quadrant A3,167,602637,650
Events in quadrant B3,260,105648,850
Events in quadrant C3,236,178632,225
Events in quadrant D3,459,114620,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138002
B0140332
C0139323
D0148182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6619410.619429%
B6619650.982021%
C66181101.662134%
D6618741.118163%

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 7614 6620 0 0 0.00% 0.00%
B 7614 6620 5 5 0.07% 0.08%
C 7613 6619 0 0 0.00% 0.00%
D 7613 6619 41 41 0.54% 0.62%

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 6 16 9585 53.29 817 801 164.8
A 13 170 7592 41.2 817 801 164.8
A 13 254 7227 38.98 817 801 164.8
B 4 80 28202 176.31 813 793 155.5
B 0 214 24024 149.43 813 793 155.5
B 12 111 19344 119.33 813 793 155.5
C 14 238 122911 650.96 797 803 187.6
C 13 61 5375 24.37 797 803 187.6
C 5 255 2328 8.13 797 803 187.6
D 7 238 304383 1556.89 807 784 195.0
D 1 52 72989 370.28 807 784 195.0
D 2 234 29126 145.34 807 784 195.0

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