ASTROSAT CZTI

Data Quality Report

Orbit 42347

Creation date: 2024-06-27T22:39:17.359744
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_102T01_9000005798_42347cztM0_level2.fits modeM0/AS1A12_102T01_9000005798_42347cztM0_level2_quad_clean.evt
Size (bytes)284,345,28087,050,880
Size271.2 MB 83.0 MB
Events in quadrant A2,707,419578,603
Events in quadrant B2,397,395583,956
Events in quadrant C2,372,313573,729
Events in quadrant D2,638,048531,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114092
B0110132
C0105832
D0116892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5259160.304240%
B5259350.665526%
C525950.095075%
D5259420.798631%

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 5260 5 5 0.07% 0.10%
B 7052 5260 24 24 0.34% 0.46%
C 7052 5260 2 2 0.03% 0.04%
D 7052 5260 30 30 0.43% 0.57%

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 550316 4856.07 550 538 113.2
A 13 248 12997 110.05 550 538 113.2
A 13 6 10316 86.37 550 538 113.2
B 5 255 100976 954.21 548 532 105.3
B 5 172 49053 460.94 548 532 105.3
B 0 245 47665 447.76 548 532 105.3
C 15 214 218108 1708.81 544 546 127.3
C 15 111 24488 188.05 544 546 127.3
C 7 247 6104 43.65 544 546 127.3
D 5 222 134156 1013.35 541 525 131.9
D 12 6 72234 543.78 541 525 131.9
D 13 249 69076 519.84 541 525 131.9

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