ASTROSAT CZTI

Data Quality Report

Orbit 38894

Creation date: 2024-06-27T21:57:50.745589
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_064T01_9000005416_38894cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38894cztM0_level2_quad_clean.evt
Size (bytes)370,074,24095,757,120
Size352.9 MB 91.3 MB
Events in quadrant A2,972,354652,810
Events in quadrant B2,719,349661,901
Events in quadrant C2,662,411638,457
Events in quadrant D4,926,585569,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122323
B0116262
C0111482
D0183602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5377320.595127%
B5377410.762507%
C5377100.185977%
D53773386.286033%

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 7230 5378 18 18 0.25% 0.33%
B 7230 5378 24 24 0.33% 0.45%
C 7230 5378 6 6 0.08% 0.11%
D 7230 5378 359 359 4.97% 6.68%

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 451362 3599.14 615 601 125.2
A 15 174 81012 642.05 615 601 125.2
A 13 248 23137 179.94 615 601 125.2
B 5 184 148235 1289.05 610 595 114.5
B 5 172 61933 535.54 610 595 114.5
B 5 200 29158 249.38 610 595 114.5
C 15 214 223126 1598.06 606 609 139.2
C 14 254 32992 232.57 606 609 139.2
C 0 10 10661 72.19 606 609 139.2
D 12 227 1183553 8228.98 595 576 143.8
D 5 222 239714 1663.48 595 576 143.8
D 14 52 196239 1361.06 595 576 143.8

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