ASTROSAT CZTI

Data Quality Report

Orbit 19680

Creation date: 2024-06-27T18:05:30.225033
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/AS1A05_221T01_9000002936_19680cztM0_level2.evt modeM0/AS1A05_221T01_9000002936_19680cztM0_level2_quad_clean.evt
Size (bytes)290,885,76053,651,520
Size277.4 MB 51.2 MB
Events in quadrant A1,897,200341,236
Events in quadrant B2,301,926348,577
Events in quadrant C2,014,940338,569
Events in quadrant D2,332,323323,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080051
B093711
C082361
D093811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3857150.388903%
B38561453.760373%
C3856350.907676%
D38561413.656639%

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 4842 3858 0 0 0.00% 0.00%
B 4841 3857 58 58 1.20% 1.50%
C 4841 3856 0 0 0.00% 0.00%
D 4840 3856 131 131 2.71% 3.40%

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 11 29 20568 201.2 485 475 99.9
A 5 16 10650 101.89 485 475 99.9
A 0 226 4265 37.95 485 475 99.9
B 3 112 388913 4170.48 478 465 93.1
B 4 216 16724 174.56 478 465 93.1
B 0 230 12449 128.66 478 465 93.1
C 3 233 75752 678.93 468 474 110.9
C 14 238 72710 651.5 468 474 110.9
C 8 208 21374 188.5 468 474 110.9
D 1 52 360990 3143.88 471 459 114.7
D 12 218 118388 1028.36 471 459 114.7
D 2 16 41132 354.67 471 459 114.7

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