ASTROSAT CZTI

Data Quality Report

Orbit 07824

Creation date: 2024-06-27T15:24:28.537324
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/AS1G06_077T02_9000001076_07824cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07824cztM0_level2_quad_clean.evt
Size (bytes)1,289,036,160248,978,880
Size1.2 GB 237.4 MB
Events in quadrant A8,882,7641,547,893
Events in quadrant B9,568,7681,574,908
Events in quadrant C8,928,6531,574,198
Events in quadrant D10,332,8851,494,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040251112
B041379138
C040307110
D044472105

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03982
B03980
C03980
D03980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195892501.276226%
B195823371.720968%
C195911480.755449%
D195963081.571749%

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 20980 19621 2 2 0.01% 0.01%
B 20980 19612 66 66 0.31% 0.34%
C 20980 19626 0 0 0.00% 0.00%
D 20980 19623 139 139 0.66% 0.71%

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 14 26086 51.7 2291 2247 461.1
A 0 226 21914 42.65 2291 2247 461.1
A 12 194 19944 38.38 2291 2247 461.1
B 4 239 262448 590.08 2315 2266 440.9
B 0 219 124041 276.18 2315 2266 440.9
B 0 214 54900 119.37 2315 2266 440.9
C 1 16 49875 91.4 2254 2269 520.8
C 9 54 47783 87.39 2254 2269 520.8
C 13 61 17205 28.68 2254 2269 520.8
D 2 152 675112 1224.7 2238 2171 549.5
D 1 52 435176 788.03 2238 2171 549.5
D 7 71 180254 324.1 2238 2171 549.5

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