ASTROSAT CZTI

Data Quality Report

Orbit 13638

Creation date: 2024-06-27T16:43:48.310221
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/AS1G08_038T01_9000002018_13638cztM0_level2.evt modeM0/AS1G08_038T01_9000002018_13638cztM0_level2_quad_clean.evt
Size (bytes)369,429,12053,164,800
Size352.3 MB 50.7 MB
Events in quadrant A2,120,857310,125
Events in quadrant B2,348,683318,256
Events in quadrant C2,259,838342,707
Events in quadrant D4,150,065319,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093771
B098431
C092701
D0156541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4539250.550782%
B4539310.682970%
C453990.198282%
D4539430.947345%

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 4540 4540 10 10 0.22% 0.22%
B 4540 4540 12 12 0.26% 0.26%
C 4540 4540 0 0 0.00% 0.00%
D 4540 4540 9 9 0.20% 0.20%

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 69 65965 596.89 533 521 109.6
A 0 226 4846 39.45 533 521 109.6
A 9 143 4071 32.38 533 521 109.6
B 0 219 175182 1719.52 531 519 101.6
B 3 64 35712 346.46 531 519 101.6
B 0 245 19535 187.2 531 519 101.6
C 3 233 205777 1691.6 526 531 121.3
C 13 61 3828 27.17 526 531 121.3
C 12 4 1437 7.47 526 531 121.3
D 13 122 1744612 13927.5 521 507 125.2
D 5 222 223261 1778.8 521 507 125.2
D 8 195 162255 1291.63 521 507 125.2

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