ASTROSAT CZTI

Data Quality Report

Orbit 28257

Creation date: 2024-06-27T19:49:43.407173
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/AS1A10_067T01_9000004076_28257cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28257cztM0_level2_quad_clean.evt
Size (bytes)545,875,20095,587,200
Size520.6 MB 91.2 MB
Events in quadrant A3,311,922629,284
Events in quadrant B4,344,677628,907
Events in quadrant C3,417,666602,209
Events in quadrant D5,006,694570,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137900
B0170450
C0141410
D0193990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6653771.157373%
B66532964.449121%
C66531301.954006%
D66533685.531339%

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 7658 6654 0 0 0.00% 0.00%
B 7658 6653 174 174 2.27% 2.62%
C 7658 6654 4 4 0.05% 0.06%
D 7658 6653 252 252 3.29% 3.79%

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 8 34 18547 103.65 852 837 170.9
A 13 254 10466 56.35 852 837 170.9
A 3 137 8220 43.21 852 837 170.9
B 10 245 1074920 6810.62 824 803 157.7
B 12 111 19300 117.28 824 803 157.7
B 0 230 18843 114.39 824 803 157.7
C 14 238 132019 690.63 809 815 190.0
C 3 233 127658 667.68 809 815 190.0
C 13 61 5531 24.82 809 815 190.0
D 1 52 1327987 6953.49 801 781 190.9
D 8 195 446633 2335.91 801 781 190.9
D 5 222 139058 724.46 801 781 190.9

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