ASTROSAT CZTI

Data Quality Report

Orbit 35624

Creation date: 2024-06-27T21:15:51.775750
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_028T01_9000005100_35624cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35624cztM0_level2_quad_clean.evt
Size (bytes)512,164,80094,426,560
Size488.4 MB 90.1 MB
Events in quadrant A3,499,031646,284
Events in quadrant B4,973,719619,961
Events in quadrant C3,542,703639,873
Events in quadrant D3,159,245605,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134453
B0180162
C0138442
D0126562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49591162.339181%
B495990018.148820%
C49591763.549103%
D49591503.024803%

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 7082 4960 134 134 1.89% 2.70%
B 7082 4960 631 631 8.91% 12.72%
C 7082 4960 134 134 1.89% 2.70%
D 7082 4960 121 121 1.71% 2.44%

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 15 169 997019 8178.66 609 600 121.8
A 10 83 135033 1103.43 609 600 121.8
A 13 6 9679 74.52 609 600 121.8
B 5 172 2629822 24336.7 575 562 108.0
B 0 155 36041 328.4 575 562 108.0
B 0 245 22024 198.65 575 562 108.0
C 0 10 1008373 7332.27 594 601 137.4
C 15 214 203225 1474.24 594 601 137.4
C 9 187 6615 43.76 594 601 137.4
D 12 17 235706 1640.37 590 576 143.3
D 13 249 155980 1084.16 590 576 143.3
D 2 250 139552 969.56 590 576 143.3

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