ASTROSAT CZTI

Data Quality Report

Orbit 18839

Creation date: 2024-06-27T17:55:29.490787
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_173T01_9000002812_18839cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18839cztM0_level2_quad_clean.evt
Size (bytes)932,181,120166,492,800
Size889.0 MB 158.8 MB
Events in quadrant A6,439,3331,059,335
Events in quadrant B7,140,1751,064,768
Events in quadrant C6,288,8481,032,998
Events in quadrant D7,497,3981,001,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273563
B0294933
C0266573
D0312213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127911961.532327%
B127912562.001407%
C127911781.391603%
D127922692.102877%

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 14561 12794 43 43 0.30% 0.34%
B 14561 12794 59 59 0.41% 0.46%
C 14561 12794 6 6 0.04% 0.05%
D 14562 12795 83 83 0.57% 0.65%

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 8 144 203838 636.51 1563 1527 317.8
A 15 174 109283 339.02 1563 1527 317.8
A 9 143 60446 185.37 1563 1527 317.8
B 10 245 674246 2233.52 1563 1525 301.2
B 0 229 74485 242.24 1563 1525 301.2
B 4 216 43434 139.14 1563 1525 301.2
C 14 238 227664 644.09 1501 1509 351.1
C 3 233 79127 221.06 1501 1509 351.1
C 0 207 77612 216.74 1501 1509 351.1
D 7 238 607565 1621.0 1516 1472 373.9
D 9 68 463092 1234.6 1516 1472 373.9
D 1 52 310794 827.28 1516 1472 373.9

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