ASTROSAT CZTI

Data Quality Report

Orbit 18142

Creation date: 2024-06-27T17:45:51.516787
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/AS1T03_035T01_9000002696_18142cztM0_level2.evt modeM0/AS1T03_035T01_9000002696_18142cztM0_level2_quad_clean.evt
Size (bytes)165,533,76015,747,840
Size157.9 MB 15.0 MB
Events in quadrant A1,073,31583,919
Events in quadrant B1,132,08585,103
Events in quadrant C1,068,07782,289
Events in quadrant D1,603,01180,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043681
B045641
C043361
D061611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1976532.682186%
B1977964.855842%
C1977934.704097%
D1977834.198280%

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 2141 1977 0 0 0.00% 0.00%
B 2142 1978 1 1 0.05% 0.05%
C 2142 1978 0 0 0.00% 0.00%
D 2142 1978 34 34 1.59% 1.72%

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 4 2 15651 263.23 273 266 58.4
A 15 174 5376 87.43 273 266 58.4
A 0 226 2455 37.45 273 266 58.4
B 0 189 15884 282.73 274 267 55.2
B 0 197 13506 239.68 274 267 55.2
B 7 220 10621 187.45 274 267 55.2
C 14 238 39312 616.46 260 261 63.3
C 3 233 10615 163.45 260 261 63.3
C 13 61 1802 24.33 260 261 63.3
D 7 238 458538 6708.89 264 255 68.3
D 12 110 80949 1181.29 264 255 68.3
D 13 104 36818 535.25 264 255 68.3

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