ASTROSAT CZTI

Data Quality Report

Orbit 00754

Creation date: 2024-06-27T14:02:30.782004
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_00754cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00754cztM0_level2_quad_clean.evt
Size (bytes)1,073,378,88097,701,120
Size1023.7 MB 93.2 MB
Events in quadrant A7,618,510633,378
Events in quadrant B8,283,410640,934
Events in quadrant C7,723,417620,504
Events in quadrant D8,436,039595,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274090
B0294030
C0277070
D0297960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A672980.118888%
B672960.089166%
C672940.059444%
D6729550.817358%

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 7834 6730 114 114 1.46% 1.69%
B 7834 6730 189 189 2.41% 2.81%
C 7834 6730 97 97 1.24% 1.44%
D 7834 6730 541 541 6.91% 8.04%

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 15 233 29270 57.85 1971 1985 471.6
A 15 17 18979 36.03 1971 1985 471.6
A 13 17 8458 13.72 1971 1985 471.6
B 7 221 186932 380.04 2098 2106 486.3
B 0 220 68025 135.54 2098 2106 486.3
B 15 85 22703 42.35 2098 2106 486.3
C 5 234 119971 222.98 1912 1979 529.2
C 15 241 60448 110.49 1912 1979 529.2
C 3 111 27916 49.02 1912 1979 529.2
D 13 25 1115192 1974.44 1831 1892 563.9
D 12 188 103900 180.91 1831 1892 563.9
D 6 226 103236 179.73 1831 1892 563.9

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