ASTROSAT CZTI

Data Quality Report

Orbit 29998

Creation date: 2024-06-27T20:09:42.663764
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_071T01_9000004310_29998cztM0_level2.evt modeM0/AS1A10_071T01_9000004310_29998cztM0_level2_quad_clean.evt
Size (bytes)598,190,400108,538,560
Size570.5 MB 103.5 MB
Events in quadrant A3,766,149705,157
Events in quadrant B5,819,565702,084
Events in quadrant C3,970,891675,405
Events in quadrant D4,041,398672,126

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161472
B0233162
C0165942
D0171492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76451772.315239%
B76462733.570494%
C76462593.387392%
D76451461.909745%

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 8120 7647 0 0 0.00% 0.00%
B 8121 7648 1 1 0.01% 0.01%
C 8121 7648 5 5 0.06% 0.07%
D 8120 7647 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 8 192 21548 103.89 969 947 198.3
A 13 254 13518 63.39 969 947 198.3
A 3 137 10280 47.06 969 947 198.3
B 6 159 2052892 11046.37 947 925 185.8
B 12 111 23424 121.12 947 925 185.8
B 11 111 21630 111.46 947 925 185.8
C 3 233 192604 867.15 926 930 221.0
C 14 238 149009 669.92 926 930 221.0
C 2 114 18211 78.18 926 930 221.0
D 8 195 249143 1001.74 937 921 247.8
D 7 80 127465 510.69 937 921 247.8
D 13 249 56072 222.57 937 921 247.8

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