ASTROSAT CZTI

Data Quality Report

Orbit 43865

Creation date: 2024-06-27T22:56:42.206569
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/AS1A13_087T01_9000005908_43865cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43865cztM0_level2_quad_clean.evt
Size (bytes)449,239,680113,025,600
Size428.4 MB 107.8 MB
Events in quadrant A3,962,001763,893
Events in quadrant B3,642,462790,002
Events in quadrant C4,460,326755,656
Events in quadrant D4,080,012677,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157851
B0147461
C0175812
D0162232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62401241.987179%
B62402363.782051%
C62401592.548077%
D62402504.006410%

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 7425 6240 4 4 0.05% 0.06%
B 7425 6240 93 93 1.25% 1.49%
C 7425 6240 41 41 0.55% 0.66%
D 7425 6240 136 136 1.83% 2.18%

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 926331 5892.36 763 748 157.1
A 2 79 26562 164.33 763 748 157.1
A 7 3 15107 91.41 763 748 157.1
B 5 235 260200 1759.75 763 740 147.4
B 0 183 207801 1404.36 763 740 147.4
B 4 170 134243 905.47 763 740 147.4
C 3 233 1217527 6824.46 761 766 178.3
C 14 254 217699 1216.71 761 766 178.3
C 1 16 15274 81.37 761 766 178.3
D 2 249 273750 1468.61 748 729 185.9
D 12 233 199471 1069.06 748 729 185.9
D 13 249 184734 989.78 748 729 185.9

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