ASTROSAT CZTI

Data Quality Report

Orbit 37927

Creation date: 2024-06-27T21:46:13.799081
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/AS1T05_059T01_9000005354_37927cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37927cztM0_level2_quad_clean.evt
Size (bytes)436,521,60053,009,280
Size416.3 MB 50.6 MB
Events in quadrant A2,797,699334,357
Events in quadrant B3,088,231327,269
Events in quadrant C2,577,951327,697
Events in quadrant D4,423,630272,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112213
B0122022
C0105012
D0163372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4899250.510308%
B48991182.408655%
C4899270.551133%
D489951310.471525%

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 7052 4900 16 16 0.23% 0.33%
B 7052 4900 80 80 1.13% 1.63%
C 7052 4900 16 16 0.23% 0.33%
D 7052 4900 481 481 6.82% 9.82%

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 10 83 347630 2868.52 604 595 121.0
A 15 174 43133 351.61 604 595 121.0
A 13 248 25760 208.01 604 595 121.0
B 5 172 412291 3676.17 589 575 112.0
B 0 229 246754 2198.11 589 575 112.0
B 0 230 49688 438.53 589 575 112.0
C 15 214 208447 1560.1 580 587 133.2
C 0 10 81539 607.59 580 587 133.2
C 14 254 12904 92.45 580 587 133.2
D 12 227 946200 6903.91 562 547 137.0
D 10 253 375703 2738.89 562 547 137.0
D 12 217 202293 1472.88 562 547 137.0

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