ASTROSAT CZTI

Data Quality Report

Orbit 19705

Creation date: 2024-06-27T18:05:49.068138
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/AS1A05_013T01_9000002944_19705cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19705cztM0_level2_quad_clean.evt
Size (bytes)659,165,76093,980,160
Size628.6 MB 89.6 MB
Events in quadrant A4,283,330573,689
Events in quadrant B4,515,683582,088
Events in quadrant C4,575,584555,192
Events in quadrant D5,997,815530,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184501
B0188901
C0189521
D0236191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87015236.010803%
B87015516.332605%
C87025876.745576%
D87028049.239255%

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 8811 8701 10 10 0.11% 0.11%
B 8811 8701 5 5 0.06% 0.06%
C 8812 8702 9 9 0.10% 0.10%
D 8812 8702 290 290 3.29% 3.33%

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 5 16 47466 205.88 1100 1071 225.3
A 0 226 9404 36.98 1100 1071 225.3
A 3 137 9377 36.86 1100 1071 225.3
B 0 198 73990 346.07 1091 1059 210.7
B 4 216 37865 174.65 1091 1059 210.7
B 0 197 35125 161.65 1091 1059 210.7
C 3 233 263016 1052.78 1055 1059 248.8
C 14 238 162393 648.39 1055 1059 248.8
C 9 221 34399 133.99 1055 1059 248.8
D 1 52 1841844 7119.47 1059 1025 258.6
D 12 225 124239 476.54 1059 1025 258.6
D 2 234 37883 142.55 1059 1025 258.6

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