ASTROSAT CZTI

Data Quality Report

Orbit 30428

Creation date: 2024-06-27T20:15:08.003332
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_121T02_9000004378_30428cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30428cztM0_level2_quad_clean.evt
Size (bytes)536,544,000101,450,880
Size511.7 MB 96.8 MB
Events in quadrant A3,344,763663,849
Events in quadrant B5,143,731667,749
Events in quadrant C3,548,270658,337
Events in quadrant D3,786,322643,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138422
B0194112
C0145382
D0154862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6290731.160572%
B62901462.321145%
C62891862.957545%
D62891792.846239%

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 7510 6291 2 2 0.03% 0.03%
B 7510 6291 0 0 0.00% 0.00%
C 7509 6289 8 8 0.11% 0.13%
D 7509 6291 95 95 1.27% 1.51%

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 0 13 80565 476.97 839 826 167.2
A 8 192 26875 155.82 839 826 167.2
A 13 254 12540 70.07 839 826 167.2
B 6 159 1831428 11639.27 835 814 157.3
B 12 111 18637 113.32 835 814 157.3
B 11 111 16771 101.46 835 814 157.3
C 14 238 137229 716.64 820 828 190.3
C 3 233 87113 453.34 820 828 190.3
C 0 10 78686 409.06 820 828 190.3
D 13 249 383485 1820.11 816 798 210.3
D 8 195 111152 524.86 816 798 210.3
D 2 250 81265 382.71 816 798 210.3

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