ASTROSAT CZTI

Data Quality Report

Orbit 31748

Creation date: 2024-06-27T20:32:14.636579
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/AS1T04_034T01_9000004632_31748cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31748cztM0_level2_quad_clean.evt
Size (bytes)793,149,120106,715,520
Size756.4 MB 101.8 MB
Events in quadrant A6,979,690666,604
Events in quadrant B6,041,759700,397
Events in quadrant C5,862,696667,955
Events in quadrant D4,627,738671,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259562
B0234462
C0225072
D0191522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7543103713.747846%
B75433474.600292%
C75436578.710062%
D75431011.338990%

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 7678 7544 572 572 7.45% 7.58%
B 7678 7545 17 17 0.22% 0.23%
C 7678 7545 260 260 3.39% 3.45%
D 7678 7545 20 20 0.26% 0.27%

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 0 13 3436483 18367.39 918 899 187.0
A 13 254 13119 65.33 918 899 187.0
A 3 137 9703 47.07 918 899 187.0
B 6 159 2115710 11508.66 948 924 183.8
B 5 172 81817 440.22 948 924 183.8
B 4 80 55495 296.98 948 924 183.8
C 0 10 2019234 9404.95 905 913 214.6
C 14 238 143152 662.8 905 913 214.6
C 3 233 80749 372.02 905 913 214.6
D 8 195 853390 3791.48 932 908 224.8
D 12 233 74068 325.38 932 908 224.8
D 2 250 63162 276.88 932 908 224.8

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