ASTROSAT CZTI

Data Quality Report

Orbit 25065

Creation date: 2024-06-27T19:13:24.478353
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/AS1T03_206T01_9000003672_25065cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25065cztM0_level2_quad_clean.evt
Size (bytes)616,443,84086,008,320
Size587.9 MB 82.0 MB
Events in quadrant A3,032,046556,985
Events in quadrant B3,519,562559,950
Events in quadrant C3,154,340532,340
Events in quadrant D8,528,973507,338

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132391
B0145561
C0133482
D0298821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6420440.685358%
B6420801.246106%
C6419731.137249%
D6419110517.214519%

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 7355 6420 0 0 0.00% 0.00%
B 7355 6421 15 15 0.20% 0.23%
C 7354 6420 0 0 0.00% 0.00%
D 7354 6419 1010 1010 13.73% 15.73%

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 13 254 11396 67.2 784 767 158.2
A 3 137 6980 39.28 784 767 158.2
A 0 226 6916 38.88 784 767 158.2
B 6 36 242105 1607.18 779 758 150.2
B 0 190 96523 637.72 779 758 150.2
B 3 64 61620 405.29 779 758 150.2
C 14 238 118531 668.38 749 754 176.2
C 7 247 79086 444.53 749 754 176.2
C 3 233 26726 147.39 749 754 176.2
D 9 35 2541249 14150.01 734 713 179.5
D 8 195 1660021 9241.84 734 713 179.5
D 1 52 999955 5565.47 734 713 179.5

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