ASTROSAT CZTI

Data Quality Report

Orbit 24950

Creation date: 2024-06-27T19:11:50.762660
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/AS1T03_200T01_9000003654_24950cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24950cztM0_level2_quad_clean.evt
Size (bytes)462,873,600127,486,080
Size441.4 MB 121.6 MB
Events in quadrant A3,089,957861,515
Events in quadrant B3,348,610882,073
Events in quadrant C3,191,399850,069
Events in quadrant D3,951,191818,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135202
B0143472
C0138042
D0162762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6430200.311042%
B6429711.104371%
C6429851.322134%
D6429490.762171%

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 7545 6431 8 8 0.11% 0.12%
B 7544 6430 22 22 0.29% 0.34%
C 7544 6430 1 1 0.01% 0.02%
D 7544 6430 17 17 0.23% 0.26%

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 6 16 47804 302.77 776 757 155.4
A 4 2 45827 290.04 776 757 155.4
A 13 254 10528 62.88 776 757 155.4
B 5 172 80558 548.97 782 763 145.4
B 0 230 59460 403.82 782 763 145.4
B 3 64 39065 263.51 782 763 145.4
C 14 238 120719 677.34 761 765 177.1
C 7 247 78863 440.99 761 765 177.1
C 2 16 11528 60.78 761 765 177.1
D 8 195 439182 2402.8 763 739 182.5
D 1 3 371505 2031.91 763 739 182.5
D 1 52 194593 1062.38 763 739 182.5

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