ASTROSAT CZTI

Data Quality Report

Orbit 24839

Creation date: 2024-06-27T19:10:28.625008
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/AS1A08_003T03_9000003632_24839cztM0_level2.evt modeM0/AS1A08_003T03_9000003632_24839cztM0_level2_quad_clean.evt
Size (bytes)514,820,16068,123,520
Size491.0 MB 65.0 MB
Events in quadrant A3,565,668415,925
Events in quadrant B3,685,494423,463
Events in quadrant C3,586,289390,071
Events in quadrant D4,312,887379,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142072
B0146812
C0142072
D0167742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6513640.982650%
B65121031.581695%
C6512981.504914%
D65122403.685504%

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 7833 6514 0 0 0.00% 0.00%
B 7832 6513 6 6 0.08% 0.09%
C 7832 6513 0 0 0.00% 0.00%
D 7832 6513 160 160 2.04% 2.46%

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 9019 44.13 925 910 183.7
A 0 226 7973 38.44 925 910 183.7
A 3 137 7785 37.42 925 910 183.7
B 0 189 50240 285.3 919 899 172.9
B 7 202 20638 114.13 919 899 172.9
B 12 111 20443 113.01 919 899 172.9
C 14 238 141751 706.21 863 870 199.5
C 10 218 59222 292.51 863 870 199.5
C 7 247 16010 75.89 863 870 199.5
D 5 222 619937 2964.93 859 835 208.8
D 1 52 318839 1522.95 859 835 208.8
D 8 195 92771 440.29 859 835 208.8

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