ASTROSAT CZTI

Data Quality Report

Orbit 39999

Creation date: 2024-06-27T22:11:06.076879
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/AS1A12_054T03_9000005516_39999cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39999cztM0_level2_quad_clean.evt
Size (bytes)387,250,56082,926,720
Size369.3 MB 79.1 MB
Events in quadrant A2,776,255582,237
Events in quadrant B2,616,169595,329
Events in quadrant C3,512,623552,204
Events in quadrant D5,034,056425,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112103
B0112122
C0137922
D0185142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5079150.295334%
B50791001.968892%
C50792625.158496%
D5079107521.165584%

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 7171 5080 12 12 0.17% 0.24%
B 7171 5080 57 57 0.79% 1.12%
C 7171 5080 217 217 3.03% 4.27%
D 7171 5080 871 871 12.15% 17.15%

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 471237 4057.96 569 557 116.0
A 13 248 74469 637.23 569 557 116.0
A 9 143 12423 102.3 569 557 116.0
B 4 171 333765 3054.98 563 548 109.1
B 0 230 32272 290.85 563 548 109.1
B 15 85 16236 143.83 563 548 109.1
C 14 254 1099268 8661.15 543 548 126.9
C 15 214 212098 1667.64 543 548 126.9
C 0 10 42258 328.8 543 548 126.9
D 2 250 2436945 19955.31 496 480 122.1
D 12 227 420336 3438.73 496 480 122.1
D 13 249 108073 881.22 496 480 122.1

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