ASTROSAT CZTI

Data Quality Report

Orbit 23960

Creation date: 2024-06-27T19:00:31.065734
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/AS1A07_101T02_9000003544_23960cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23960cztM0_level2_quad_clean.evt
Size (bytes)641,338,56099,601,920
Size611.6 MB 95.0 MB
Events in quadrant A3,735,262631,035
Events in quadrant B5,255,072627,889
Events in quadrant C3,899,742624,634
Events in quadrant D6,007,251593,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161762
B0206552
C0164752
D0232242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7754881.134898%
B77554075.248227%
C77552272.927144%
D77557689.903288%

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 8634 7756 0 0 0.00% 0.00%
B 8635 7757 219 219 2.54% 2.82%
C 8635 7757 10 10 0.12% 0.13%
D 8635 7757 419 419 4.85% 5.40%

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 12568 59.63 967 946 194.9
A 3 137 8715 39.86 967 946 194.9
A 4 2 8322 37.84 967 946 194.9
B 3 64 1459678 8005.58 952 927 182.2
B 12 111 21749 114.27 952 927 182.2
B 4 52 19852 103.86 952 927 182.2
C 14 238 148704 683.36 928 932 216.2
C 0 10 93014 425.83 928 932 216.2
C 0 239 21766 96.35 928 932 216.2
D 12 218 2023953 9192.15 901 870 220.1
D 8 195 239887 1086.0 901 870 220.1
D 2 82 156796 708.47 901 870 220.1

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