ASTROSAT CZTI

Data Quality Report

Orbit 37577

Creation date: 2024-06-27T21:41:45.536258
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/AS1T05_053T01_9000005338_37577cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37577cztM0_level2_quad_clean.evt
Size (bytes)416,404,80067,432,320
Size397.1 MB 64.3 MB
Events in quadrant A3,010,331426,522
Events in quadrant B2,893,255436,475
Events in quadrant C2,615,426426,629
Events in quadrant D3,742,917392,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122603
B0118042
C0108382
D0147022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5138741.440249%
B5138731.420786%
C5138420.817439%
D51381923.736863%

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 7110 5139 66 66 0.93% 1.28%
B 7110 5139 62 62 0.87% 1.21%
C 7110 5139 36 36 0.51% 0.70%
D 7110 5139 195 195 2.74% 3.79%

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 320147 2634.54 599 590 121.3
A 9 143 247414 2034.9 599 590 121.3
A 15 222 96901 794.02 599 590 121.3
B 5 172 129574 1129.32 603 587 114.2
B 5 200 90746 789.37 603 587 114.2
B 4 81 68576 595.27 603 587 114.2
C 15 214 222367 1665.38 577 581 133.2
C 0 10 122289 913.9 577 581 133.2
C 14 254 7562 52.42 577 581 133.2
D 2 250 424086 3076.78 566 550 137.7
D 10 253 272073 1972.48 566 550 137.7
D 1 47 255598 1852.8 566 550 137.7

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