ASTROSAT CZTI

Data Quality Report

Orbit 28853

Creation date: 2024-06-27T19:57:13.274430
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/AS1A10_103T08_9000004136_28853cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28853cztM0_level2_quad_clean.evt
Size (bytes)854,778,240130,556,160
Size815.2 MB 124.5 MB
Events in quadrant A3,500,940933,989
Events in quadrant B4,361,582934,308
Events in quadrant C4,382,728906,509
Events in quadrant D13,147,841668,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151591
B0177191
C0176731
D0439931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73082793.817734%
B73095237.155562%
C73093584.898071%
D7309419057.326584%

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 7368 7308 0 0 0.00% 0.00%
B 7369 7309 173 173 2.35% 2.37%
C 7369 7309 12 12 0.16% 0.16%
D 7368 7308 4068 4068 55.21% 55.67%

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 1 113 66716 371.81 881 858 177.1
A 14 235 22980 124.89 881 858 177.1
A 13 254 14278 75.76 881 858 177.1
B 10 246 439801 2669.69 866 844 164.4
B 5 255 292776 1775.5 866 844 164.4
B 5 172 174102 1053.74 866 844 164.4
C 3 233 814640 4121.93 848 853 197.4
C 14 238 139974 704.66 848 853 197.4
C 15 208 98888 496.56 848 853 197.4
D 8 195 7223788 43225.08 705 683 167.1
D 1 52 2893972 17314.25 705 683 167.1
D 2 250 179386 1069.41 705 683 167.1

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