ASTROSAT CZTI

Data Quality Report

Orbit 00783

Creation date: 2024-06-27T14:02:54.215429
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/AS1P01_010T01_9000000108_00783cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00783cztM0_level2_quad_clean.evt
Size (bytes)1,140,140,160104,385,600
Size1.1 GB 99.5 MB
Events in quadrant A7,964,124684,084
Events in quadrant B8,629,004691,562
Events in quadrant C10,107,231651,001
Events in quadrant D7,370,524652,571

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285840
B0305600
C0349140
D0268440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6920150.216763%
B69201021.473988%
C69193475.015176%
D6919350.505853%

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 7925 6921 221 221 2.79% 3.19%
B 7925 6921 362 362 4.57% 5.23%
C 7924 6920 982 982 12.39% 14.19%
D 7924 6920 172 172 2.17% 2.49%

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 12 243 50119 97.98 2046 2062 490.5
A 15 233 28597 54.1 2046 2062 490.5
A 15 17 16076 28.57 2046 2062 490.5
B 0 187 280145 554.47 2166 2173 501.3
B 5 191 48095 91.6 2166 2173 501.3
B 0 190 21052 37.66 2166 2173 501.3
C 9 83 1274436 2363.7 1949 2017 538.3
C 10 17 1071995 1987.64 1949 2017 538.3
C 9 52 62501 112.36 1949 2017 538.3
D 13 25 122363 208.4 1881 1948 577.8
D 1 4 105808 179.75 1881 1948 577.8
D 13 37 27378 44.01 1881 1948 577.8

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