ASTROSAT CZTI

Data Quality Report

Orbit 38156

Creation date: 2024-06-27T21:49:06.731487
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/AS1A07_145T01_9000005370_38156cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38156cztM0_level2_quad_clean.evt
Size (bytes)327,844,80099,800,640
Size312.7 MB 95.2 MB
Events in quadrant A2,847,473672,176
Events in quadrant B2,751,667694,867
Events in quadrant C2,801,228665,861
Events in quadrant D3,317,769614,212

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116813
B0114632
C0114332
D0132732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5362110.205147%
B5362530.988437%
C5362160.298396%
D5362420.783290%

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 7275 5363 8 8 0.11% 0.15%
B 7275 5363 31 31 0.43% 0.58%
C 7275 5363 15 15 0.21% 0.28%
D 7275 5363 40 40 0.55% 0.75%

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 365170 2866.18 631 620 127.2
A 12 189 12732 95.23 631 620 127.2
A 12 16 10333 76.37 631 620 127.2
B 4 171 130953 1081.29 635 617 120.5
B 5 172 98141 809.07 635 617 120.5
B 12 111 14660 116.5 635 617 120.5
C 15 214 225004 1546.83 627 633 145.1
C 0 10 29556 199.4 627 633 145.1
C 1 23 23387 156.87 627 633 145.1
D 10 203 448176 2953.95 621 605 151.5
D 7 55 224956 1480.71 621 605 151.5
D 13 249 80346 526.29 621 605 151.5

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