ASTROSAT CZTI

Data Quality Report

Orbit 21587

Creation date: 2024-06-27T18:29:54.859391
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/AS1A06_002T02_9000003204_21587cztM0_level2.evt modeM0/AS1A06_002T02_9000003204_21587cztM0_level2_quad_clean.evt
Size (bytes)950,448,960155,586,240
Size906.4 MB 148.4 MB
Events in quadrant A7,826,624956,234
Events in quadrant B6,591,027981,823
Events in quadrant C6,092,941950,411
Events in quadrant D7,403,569934,224

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312790
B0276870
C0263710
D0305880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128584743.686421%
B128593182.472976%
C128593172.465199%
D128594613.585038%

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 13248 12860 151 151 1.14% 1.17%
B 13249 12861 9 9 0.07% 0.07%
C 13249 12861 0 0 0.00% 0.00%
D 13249 12861 213 213 1.61% 1.66%

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 15 236 1836356 5891.99 1553 1519 311.4
A 13 254 18373 54.12 1553 1519 311.4
A 0 226 13546 38.62 1553 1519 311.4
B 0 189 210248 701.74 1557 1516 297.4
B 0 230 124286 412.74 1557 1516 297.4
B 3 64 79264 261.38 1557 1516 297.4
C 14 238 232978 657.18 1497 1506 352.2
C 8 128 11850 29.37 1497 1506 352.2
C 13 61 10812 26.42 1497 1506 352.2
D 1 52 642482 1735.03 1513 1464 369.5
D 7 38 490511 1323.69 1513 1464 369.5
D 2 136 175478 471.0 1513 1464 369.5

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