ASTROSAT CZTI

Data Quality Report

Orbit 42769

Creation date: 2024-06-27T22:44:01.295433
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_013T01_9000005822_42769cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42769cztM0_level2_quad_clean.evt
Size (bytes)338,976,00098,066,880
Size323.3 MB 93.5 MB
Events in quadrant A3,535,995649,281
Events in quadrant B2,623,697658,320
Events in quadrant C2,980,352652,612
Events in quadrant D2,952,677601,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138601
B0119211
C0124701
D0128241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58421131.934269%
B5843110.188259%
C5843320.547664%
D5843601.026870%

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 7185 5843 90 90 1.25% 1.54%
B 7186 5844 7 7 0.10% 0.12%
C 7186 5844 25 25 0.35% 0.43%
D 7186 5844 63 63 0.88% 1.08%

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 589087 4435.79 648 633 132.7
A 13 248 382691 2879.97 648 633 132.7
A 12 189 35796 265.06 648 633 132.7
B 15 85 43835 343.74 641 623 125.7
B 5 172 22041 170.38 641 623 125.7
B 0 230 16676 127.7 641 623 125.7
C 15 214 245395 1646.57 635 639 148.6
C 14 254 182596 1224.1 635 639 148.6
C 0 207 66602 443.76 635 639 148.6
D 5 171 238295 1517.08 636 618 156.7
D 1 52 129041 819.72 636 618 156.7
D 5 70 34168 214.15 636 618 156.7

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