ASTROSAT CZTI

Data Quality Report

Orbit 46765

Creation date: 2024-06-27T23:27:21.912480
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/AS1A13_053T01_9000006266_46765cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46765cztM0_level2_quad_clean.evt
Size (bytes)502,467,840105,704,640
Size479.2 MB 100.8 MB
Events in quadrant A7,313,959669,961
Events in quadrant B3,266,947761,297
Events in quadrant C2,967,005713,569
Events in quadrant D4,563,721617,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02588316
B0138500
C0133640
D0179010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A628971711.400859%
B6292751.191990%
C6291560.890161%
D62914987.916071%

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 7512 6290 515 515 6.86% 8.19%
B 7512 6292 8 8 0.11% 0.13%
C 7512 6293 33 33 0.44% 0.52%
D 7512 6293 427 427 5.68% 6.79%

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 10 83 3235683 22608.54 696 683 143.1
A 9 191 1270397 8873.69 696 683 143.1
A 13 248 43693 300.59 696 683 143.1
B 3 112 273401 1970.17 719 699 138.4
B 5 172 40880 290.29 719 699 138.4
B 0 190 35507 251.48 719 699 138.4
C 14 254 222663 1371.35 697 701 161.9
C 3 233 9623 55.12 697 701 161.9
C 12 249 8482 48.07 697 701 161.9
D 1 52 1019314 6066.51 674 650 167.9
D 13 249 368642 2191.53 674 650 167.9
D 9 49 193811 1150.34 674 650 167.9

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