ASTROSAT CZTI

Data Quality Report

Orbit 42638

Creation date: 2024-06-27T22:42:31.400310
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_174T01_9000005820_42638cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42638cztM0_level2_quad_clean.evt
Size (bytes)381,931,200103,985,280
Size364.2 MB 99.2 MB
Events in quadrant A3,438,869693,761
Events in quadrant B2,927,285706,552
Events in quadrant C3,009,421689,170
Events in quadrant D4,265,148613,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139562
B0131712
C0128683
D0170872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6386190.297526%
B6386140.219230%
C638640.062637%
D63863305.167554%

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 9492 6388 3 3 0.03% 0.05%
B 9492 6388 5 5 0.05% 0.08%
C 9492 6388 3 3 0.03% 0.05%
D 9492 6388 303 303 3.19% 4.74%

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 630139 4305.73 702 686 146.2
A 13 248 52251 352.73 702 686 146.2
A 15 223 19697 130.04 702 686 146.2
B 0 245 78387 568.5 697 678 136.7
B 3 112 71018 514.59 697 678 136.7
B 5 172 24547 174.62 697 678 136.7
C 15 214 265548 1643.73 692 695 161.1
C 3 233 27380 165.61 692 695 161.1
C 14 254 15333 90.85 692 695 161.1
D 2 249 549510 3346.72 678 660 164.0
D 12 6 332284 2022.14 678 660 164.0
D 1 52 211979 1288.56 678 660 164.0

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