ASTROSAT CZTI

Data Quality Report

Orbit 27597

Creation date: 2024-06-27T19:42:00.084122
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/AS1T03_257T01_9000003976_27597cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27597cztM0_level2_quad_clean.evt
Size (bytes)1,035,328,320171,288,000
Size987.4 MB 163.4 MB
Events in quadrant A5,894,5821,110,394
Events in quadrant B6,353,1531,126,002
Events in quadrant C6,291,8581,074,588
Events in quadrant D11,959,6661,000,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258600
B0268410
C0268610
D0443280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126631240.979231%
B126641591.255527%
C126642531.997789%
D1266412189.617814%

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 13928 12665 1 1 0.01% 0.01%
B 13929 12666 23 23 0.17% 0.18%
C 13929 12666 42 42 0.30% 0.33%
D 13929 12666 1174 1174 8.43% 9.27%

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 22255 67.34 1522 1488 308.4
A 3 137 14861 43.36 1522 1488 308.4
A 8 192 13429 38.72 1522 1488 308.4
B 15 32 142336 483.75 1509 1466 291.2
B 3 64 108685 368.19 1509 1466 291.2
B 4 200 68190 229.13 1509 1466 291.2
C 2 16 348968 1015.6 1456 1463 342.2
C 14 238 235052 682.67 1456 1463 342.2
C 3 233 25685 70.79 1456 1463 342.2
D 1 52 5073105 14780.21 1442 1402 343.1
D 7 80 981398 2855.95 1442 1402 343.1
D 2 250 267863 776.53 1442 1402 343.1

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