ASTROSAT CZTI

Data Quality Report

Orbit 15304

Creation date: 2024-06-27T17:06:30.303456
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/AS1A04_223T01_9000002258_15304cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15304cztM0_level2_quad_clean.evt
Size (bytes)581,581,440110,059,200
Size554.6 MB 105.0 MB
Events in quadrant A3,926,008699,074
Events in quadrant B4,186,405707,571
Events in quadrant C4,689,690689,378
Events in quadrant D4,243,069655,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172803
B0177542
C0191392
D0186132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8362750.896915%
B83621271.518775%
C83621682.009089%
D83621431.710117%

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 9128 8365 0 0 0.00% 0.00%
B 9128 8365 6 6 0.07% 0.07%
C 9128 8365 72 72 0.79% 0.86%
D 9128 8365 81 81 0.89% 0.97%

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 9 143 22028 101.65 1014 992 206.9
A 0 226 9215 39.73 1014 992 206.9
A 12 194 7636 32.1 1014 992 206.9
B 0 189 68089 338.25 1014 985 198.4
B 0 197 42283 208.17 1014 985 198.4
B 12 111 22952 110.73 1014 985 198.4
C 3 233 501008 2215.08 970 975 225.7
C 4 254 397973 1758.64 970 975 225.7
C 13 61 6865 26.09 970 975 225.7
D 7 38 325369 1358.49 971 942 238.8
D 2 33 96057 398.28 971 942 238.8
D 1 52 92919 385.14 971 942 238.8

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