ASTROSAT CZTI

Data Quality Report

Orbit 36613

Creation date: 2024-06-27T21:29:11.280535
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_073T02_9000005226_36613cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36613cztM0_level2_quad_clean.evt
Size (bytes)544,610,88082,252,800
Size519.4 MB 78.4 MB
Events in quadrant A2,997,475541,852
Events in quadrant B3,739,730530,114
Events in quadrant C3,763,326523,697
Events in quadrant D5,596,985486,320

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125843
B0148042
C0147932
D0207292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5843200.342290%
B58433666.263906%
C58431582.704090%
D58433866.606195%

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 8829 5845 10 10 0.11% 0.17%
B 8829 5845 264 264 2.99% 4.52%
C 8829 5845 117 117 1.33% 2.00%
D 8829 5845 364 364 4.12% 6.23%

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 10 83 221508 1612.94 677 665 136.9
A 15 223 150119 1091.55 677 665 136.9
A 13 254 8196 55.0 677 665 136.9
B 4 171 777251 6134.95 653 634 126.6
B 0 219 148232 1165.96 653 634 126.6
B 15 32 61797 483.16 653 634 126.6
C 0 207 465919 3065.75 645 649 151.8
C 0 10 329195 2164.85 645 649 151.8
C 15 214 247926 1629.36 645 649 151.8
D 12 235 2479870 15526.83 643 624 159.7
D 12 128 173608 1083.35 643 624 159.7
D 13 171 144018 898.04 643 624 159.7

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