ASTROSAT CZTI

Data Quality Report

Orbit 34048

Creation date: 2024-06-27T20:55:52.280382
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/AS1A06_003T04_9000004866_34048cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34048cztM0_level2_quad_clean.evt
Size (bytes)786,263,04083,232,000
Size749.8 MB 79.4 MB
Events in quadrant A7,375,166492,433
Events in quadrant B7,571,136521,262
Events in quadrant C3,416,934607,466
Events in quadrant D5,109,386544,230

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254383
B0259152
C0134972
D0186962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5037174734.683343%
B5037205140.718682%
C50371052.084574%
D503758011.514791%

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 7069 5036 1671 1671 23.64% 33.18%
B 7070 5038 1914 1914 27.07% 37.99%
C 7070 5038 78 78 1.10% 1.55%
D 7070 5038 574 574 8.12% 11.39%

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 15 169 5347247 51144.48 519 510 104.5
A 10 83 15108 139.64 519 510 104.5
A 13 254 7792 69.66 519 510 104.5
B 5 31 2719045 27406.28 525 513 99.2
B 5 15 1372656 13832.96 525 513 99.2
B 5 172 691776 6968.82 525 513 99.2
C 0 10 343123 2513.62 591 596 136.3
C 3 233 318952 2336.24 591 596 136.3
C 15 214 240844 1763.05 591 596 136.3
D 8 195 921823 6574.56 575 560 140.1
D 2 250 569820 4062.5 575 560 140.1
D 2 249 363102 2587.27 575 560 140.1

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