ASTROSAT CZTI

Data Quality Report

Orbit 23505

Creation date: 2024-06-27T18:55:19.252988
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_100T02_9000003476_23505cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23505cztM0_level2_quad_clean.evt
Size (bytes)314,357,76066,582,720
Size299.8 MB 63.5 MB
Events in quadrant A1,992,695440,789
Events in quadrant B2,285,084446,070
Events in quadrant C2,075,160427,196
Events in quadrant D2,880,439405,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085771
B094731
C087431
D0112991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4206390.927247%
B4207852.020442%
C4207571.354885%
D42072896.869503%

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 4891 4206 0 0 0.00% 0.00%
B 4892 4207 14 14 0.29% 0.33%
C 4892 4207 4 4 0.08% 0.10%
D 4892 4207 226 226 4.62% 5.37%

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 13 254 7840 69.92 516 503 104.9
A 3 137 4547 38.54 516 503 104.9
A 0 226 4374 36.89 516 503 104.9
B 0 189 211752 2141.67 510 498 98.6
B 0 229 18889 186.45 510 498 98.6
B 0 219 15501 152.1 510 498 98.6
C 14 238 77272 657.83 494 497 116.7
C 0 207 34779 293.74 494 497 116.7
C 7 247 20938 175.14 494 497 116.7
D 1 52 949804 8025.33 486 470 118.3
D 7 38 23822 197.41 486 470 118.3
D 7 238 19392 159.96 486 470 118.3

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