ASTROSAT CZTI

Data Quality Report

Orbit 13956

Creation date: 2024-06-27T16:48:27.242219
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_225T01_9000002062_13956cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13956cztM0_level2_quad_clean.evt
Size (bytes)661,127,040108,815,040
Size630.5 MB 103.8 MB
Events in quadrant A3,831,281687,944
Events in quadrant B4,041,806721,513
Events in quadrant C3,936,254697,897
Events in quadrant D7,663,380623,889

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169113
B0173362
C0168542
D0284192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8116460.566782%
B8116971.195170%
C8116500.616067%
D811687510.781173%

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 9737 8119 5 5 0.05% 0.06%
B 9737 8119 8 8 0.08% 0.10%
C 9737 8119 0 0 0.00% 0.00%
D 9737 8119 783 783 8.04% 9.64%

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 1 162 25993 126.35 970 949 198.2
A 15 69 18721 89.66 970 949 198.2
A 15 222 13550 63.57 970 949 198.2
B 3 209 55762 294.04 985 957 186.4
B 0 189 41906 219.7 985 957 186.4
B 4 80 37151 194.19 985 957 186.4
C 3 233 185063 827.46 962 966 222.5
C 13 61 6949 26.89 962 966 222.5
C 3 202 2214 5.61 962 966 222.5
D 13 122 1650507 7499.22 908 887 220.0
D 10 157 1594771 7245.85 908 887 220.0
D 1 52 506935 2300.51 908 887 220.0

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