ASTROSAT CZTI

Data Quality Report

Orbit 27418

Creation date: 2024-06-27T19:39:52.370404
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_249T01_9000003934_27418cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27418cztM0_level2_quad_clean.evt
Size (bytes)533,551,68085,942,080
Size508.8 MB 82.0 MB
Events in quadrant A3,375,228549,006
Events in quadrant B3,506,726553,016
Events in quadrant C3,740,917519,127
Events in quadrant D5,077,285510,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139690
B0143730
C0151340
D0195960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67611301.922792%
B67611552.292560%
C67612503.697678%
D67603134.630178%

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 7556 6761 0 0 0.00% 0.00%
B 7556 6761 17 17 0.22% 0.25%
C 7556 6761 95 95 1.26% 1.41%
D 7555 6760 179 179 2.37% 2.65%

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 11333 59.62 870 851 175.8
A 3 137 8101 41.24 870 851 175.8
A 0 226 7572 38.23 870 851 175.8
B 0 190 81663 497.3 851 830 162.5
B 4 52 40242 242.47 851 830 162.5
B 12 111 19619 115.59 851 830 162.5
C 2 16 391076 2016.39 821 826 193.5
C 14 238 129453 664.6 821 826 193.5
C 10 22 16700 82.02 821 826 193.5
D 1 52 1620920 8164.52 832 810 198.4
D 2 250 259062 1301.46 832 810 198.4
D 12 227 32121 157.79 832 810 198.4

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