ASTROSAT CZTI

Data Quality Report

Orbit 23813

Creation date: 2024-06-27T18:59:01.525778
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_113T01_9000003526_23813cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23813cztM0_level2_quad_clean.evt
Size (bytes)657,463,680100,497,600
Size627.0 MB 95.8 MB
Events in quadrant A3,378,550657,417
Events in quadrant B4,008,739676,598
Events in quadrant C3,536,803661,595
Events in quadrant D8,529,455576,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143712
B0161572
C0146922
D0301753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6764911.345358%
B67644045.972797%
C67641812.675931%
D6764135420.017741%

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 9049 6765 0 0 0.00% 0.00%
B 9049 6764 164 164 1.81% 2.42%
C 9049 6764 2 2 0.02% 0.03%
D 9049 6765 1028 1028 11.36% 15.20%

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 11827 62.04 876 856 176.8
A 3 137 7731 38.88 876 856 176.8
A 0 226 7481 37.47 876 856 176.8
B 3 64 590239 3583.11 864 845 164.5
B 12 111 19769 115.04 864 845 164.5
B 11 111 17610 101.92 864 845 164.5
C 14 238 136826 681.2 858 866 199.6
C 0 10 19776 94.74 858 866 199.6
C 8 128 14068 66.15 858 866 199.6
D 1 52 2228481 11345.83 808 785 196.3
D 8 195 1901203 9678.97 808 785 196.3
D 13 174 1133295 5767.96 808 785 196.3

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