ASTROSAT CZTI

Data Quality Report

Orbit 04471

Creation date: 2024-06-27T14:42:28.466881
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/AS1G05_253T01_9000000560_04471cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04471cztM0_level2_quad_clean.evt
Size (bytes)2,186,081,280342,676,800
Size2.0 GB 326.8 MB
Events in quadrant A15,976,1532,063,381
Events in quadrant B16,238,6622,053,397
Events in quadrant C15,258,5532,071,777
Events in quadrant D16,574,8251,994,781

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06500
B06500
C06500
D06500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07025425
B07016024
C06801212
D07259416

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A319465291.655919%
B319453251.017374%
C319501470.460094%
D319484871.524352%

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 37013 31959 300 300 0.81% 0.94%
B 37013 31959 96 96 0.26% 0.30%
C 37013 31959 65 65 0.18% 0.20%
D 37013 31959 319 319 0.86% 1.00%

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 1822023 2483.83 3591 3510 732.1
A 0 118 114141 151.11 3591 3510 732.1
A 15 234 54170 69.19 3591 3510 732.1
B 14 167 613888 874.27 3652 3573 698.1
B 4 48 478594 680.46 3652 3573 698.1
B 15 204 313506 443.98 3652 3573 698.1
C 14 48 929787 1143.85 3514 3530 809.8
C 9 16 399728 489.27 3514 3530 809.8
C 9 247 129294 155.31 3514 3530 809.8
D 13 235 1719540 2054.77 3470 3367 835.2
D 12 79 564677 672.05 3470 3367 835.2
D 2 136 349311 414.2 3470 3367 835.2

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