ASTROSAT CZTI

Data Quality Report

Orbit 40852

Creation date: 2024-06-27T22:21:20.572603
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/AS1A12_104T02_9000005572_40852cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40852cztM0_level2_quad_clean.evt
Size (bytes)416,082,24084,502,080
Size396.8 MB 80.6 MB
Events in quadrant A2,843,680593,958
Events in quadrant B2,503,842619,375
Events in quadrant C2,746,945576,482
Events in quadrant D6,921,586420,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114803
B0108152
C0111722
D0239942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4963340.685070%
B4963220.443280%
C4963801.611928%
D4963126225.428168%

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 7084 4964 17 17 0.24% 0.34%
B 7084 4964 8 8 0.11% 0.16%
C 7084 4964 78 78 1.10% 1.57%
D 7084 4964 1423 1423 20.09% 28.67%

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 461659 4000.37 562 552 115.3
A 13 248 104400 900.94 562 552 115.3
A 12 189 54044 464.07 562 552 115.3
B 7 202 148792 1365.95 565 550 108.5
B 4 171 89598 820.52 565 550 108.5
B 0 190 23570 212.11 565 550 108.5
C 14 254 211097 1653.18 547 552 127.4
C 15 214 210824 1651.03 547 552 127.4
C 0 10 178680 1398.64 547 552 127.4
D 12 79 4560516 36258.7 507 493 125.8
D 13 249 225736 1791.0 507 493 125.8
D 2 249 166100 1316.81 507 493 125.8

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