ASTROSAT CZTI

Data Quality Report

Orbit 26936

Creation date: 2024-06-27T19:34:41.776121
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/AS1A09_134T01_9000003896_26936cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26936cztM0_level2_quad_clean.evt
Size (bytes)818,265,60079,130,880
Size780.4 MB 75.5 MB
Events in quadrant A11,330,860310,348
Events in quadrant B4,345,542583,592
Events in quadrant C3,288,820567,706
Events in quadrant D5,396,129499,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379010
B0168870
C0134300
D0201780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212432569.623310%
B62122744.410818%
C6212620.998068%
D621264010.302640%

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 7491 6211 3382 3382 45.15% 54.45%
B 7492 6213 175 175 2.34% 2.82%
C 7492 6213 3 3 0.04% 0.05%
D 7492 6213 578 578 7.71% 9.30%

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 14 235 9500247 106838.84 448 441 88.9
A 0 13 55538 619.64 448 441 88.9
A 8 192 34258 380.32 448 441 88.9
B 0 189 830068 5445.29 817 800 152.3
B 10 245 243264 1592.11 817 800 152.3
B 0 219 37361 240.07 817 800 152.3
C 14 238 131277 711.79 795 803 183.3
C 0 207 36587 195.22 795 803 183.3
C 15 208 22581 118.81 795 803 183.3
D 1 52 1468375 7885.79 747 732 186.1
D 2 250 401775 2154.84 747 732 186.1
D 7 80 255817 1370.6 747 732 186.1

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