ASTROSAT CZTI

Data Quality Report

Orbit 07763

Creation date: 2024-06-27T15:23:42.188447
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/AS1A02_132T01_9000001068_07763cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07763cztM0_level2_quad_clean.evt
Size (bytes)522,774,72079,079,040
Size498.6 MB 75.4 MB
Events in quadrant A3,641,106462,957
Events in quadrant B4,073,543470,626
Events in quadrant C3,641,515472,116
Events in quadrant D3,947,433447,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161672
B0171211
C0161801
D0171251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77841842.363823%
B77842663.417266%
C77841341.721480%
D77841572.016958%

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 7949 7784 0 0 0.00% 0.00%
B 7949 7784 61 61 0.77% 0.78%
C 7949 7785 0 0 0.00% 0.00%
D 7949 7785 16 16 0.20% 0.21%

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 0 226 8834 40.64 944 921 194.7
A 12 194 8332 38.06 944 921 194.7
A 13 254 3696 14.25 944 921 194.7
B 0 229 200300 1081.74 947 923 184.3
B 4 173 115487 621.58 947 923 184.3
B 0 214 22597 117.59 947 923 184.3
C 8 128 11724 49.61 924 930 217.6
C 13 61 7270 29.14 924 930 217.6
C 8 112 6781 26.89 924 930 217.6
D 2 152 186194 801.91 926 898 231.1
D 1 52 85669 366.87 926 898 231.1
D 7 55 60773 259.12 926 898 231.1

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