ASTROSAT CZTI

Data Quality Report

Orbit 26461

Creation date: 2024-06-27T19:29:16.981171
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/AS1A09_056T01_9000003824_26461cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26461cztM0_level2_quad_clean.evt
Size (bytes)242,827,20052,369,920
Size231.6 MB 49.9 MB
Events in quadrant A1,182,188373,207
Events in quadrant B1,227,831383,318
Events in quadrant C1,393,719365,141
Events in quadrant D3,390,564296,081

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049850
B050830
C056790
D0117240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232130.129255%
B232160.258509%
C2321441.895735%
D232175232.399828%

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 2321 2321 0 0 0.00% 0.00%
B 2321 2321 2 2 0.09% 0.09%
C 2321 2321 11 11 0.47% 0.47%
D 2321 2321 685 685 29.51% 29.51%

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 3978 60.14 305 301 61.1
A 0 226 2575 37.19 305 301 61.1
A 3 137 2509 36.11 305 301 61.1
B 0 245 13039 224.76 306 300 56.7
B 0 244 9386 160.31 306 300 56.7
B 5 172 8053 136.79 306 300 56.7
C 2 16 94441 1324.68 302 305 71.1
C 3 233 67690 948.24 302 305 71.1
C 14 238 48445 677.43 302 305 71.1
D 1 52 1476405 23774.62 259 253 62.1
D 7 80 460684 7415.61 259 253 62.1
D 12 233 453143 7294.16 259 253 62.1

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