ASTROSAT CZTI

Data Quality Report

Orbit 21865

Creation date: 2024-06-27T18:33:12.322683
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/AS1A07_118T01_9000003232_21865cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21865cztM0_level2_quad_clean.evt
Size (bytes)1,757,721,600219,490,560
Size1.6 GB 209.3 MB
Events in quadrant A8,884,5681,451,618
Events in quadrant B9,248,3571,480,472
Events in quadrant C8,816,8401,446,120
Events in quadrant D25,032,504990,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383864
B0389854
C0380744
D0869664

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185303251.753913%
B185304012.164058%
C185313932.120771%
D18531689137.186336%

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 20805 18530 5 5 0.02% 0.03%
B 20805 18530 34 34 0.16% 0.18%
C 20806 18532 0 0 0.00% 0.00%
D 20805 18530 5048 5048 24.26% 27.24%

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 4 2 68859 145.8 2265 2210 457.1
A 5 16 60102 126.64 2265 2210 457.1
A 13 254 33727 68.95 2265 2210 457.1
B 3 64 157860 356.06 2264 2202 437.2
B 0 190 86350 192.48 2264 2202 437.2
B 12 111 53666 117.72 2264 2202 437.2
C 14 238 340725 665.41 2175 2184 508.8
C 13 61 15279 25.74 2175 2184 508.8
C 15 78 5322 6.17 2175 2184 508.8
D 1 52 17797311 43171.23 1639 1599 412.2
D 12 227 248119 598.04 1639 1599 412.2
D 7 238 228051 549.36 1639 1599 412.2

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