ASTROSAT CZTI

Data Quality Report

Orbit 36668

Creation date: 2024-06-27T21:30:00.164690
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/AS1A11_049T05_9000005232_36668cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36668cztM0_level2_quad_clean.evt
Size (bytes)437,509,44081,564,480
Size417.2 MB 77.8 MB
Events in quadrant A2,687,677550,959
Events in quadrant B2,540,519556,002
Events in quadrant C3,881,592516,081
Events in quadrant D3,809,205504,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107953
B0102752
C0145132
D0143762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4880320.655738%
B4880130.266393%
C48804549.303279%
D48801964.016393%

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 7003 4881 24 24 0.34% 0.49%
B 7003 4881 5 5 0.07% 0.10%
C 7003 4881 350 350 5.00% 7.17%
D 7003 4881 191 191 2.73% 3.91%

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 200025 1613.44 618 608 123.6
A 15 223 60983 488.48 618 608 123.6
A 0 8 24399 192.49 618 608 123.6
B 0 199 44945 382.72 608 593 115.9
B 0 221 27265 230.16 608 593 115.9
B 0 189 23621 198.71 608 593 115.9
C 0 10 1398468 10618.14 571 577 131.7
C 15 214 217852 1650.38 571 577 131.7
C 12 249 29852 222.37 571 577 131.7
D 12 233 295360 2041.38 591 575 144.4
D 1 20 268209 1853.36 591 575 144.4
D 7 38 265269 1833.0 591 575 144.4

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