ASTROSAT CZTI

Data Quality Report

Orbit 39219

Creation date: 2024-06-27T22:01:55.348166
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_054T04_9000005446_39219cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39219cztM0_level2_quad_clean.evt
Size (bytes)588,519,36080,303,040
Size561.3 MB 76.6 MB
Events in quadrant A2,995,316640,854
Events in quadrant B2,764,557642,799
Events in quadrant C2,694,006606,875
Events in quadrant D12,894,549148,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124893
B0121472
C0115512
D0421782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5606520.927578%
B5606571.016768%
C560680.142704%
D5606448980.074920%

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 7070 5607 31 31 0.44% 0.55%
B 7070 5607 30 30 0.42% 0.54%
C 7070 5607 2 2 0.03% 0.04%
D 7070 5607 3522 3522 49.82% 62.81%

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 450331 3564.35 618 605 126.2
A 13 248 145672 1149.74 618 605 126.2
A 13 254 7833 57.29 618 605 126.2
B 5 172 192053 1607.77 610 592 119.1
B 5 255 134734 1126.44 610 592 119.1
B 0 190 30501 251.15 610 592 119.1
C 15 214 236068 1685.11 598 602 139.7
C 3 233 96419 685.71 598 602 139.7
C 8 222 11283 76.44 598 602 139.7
D 12 235 8938849 97620.22 364 351 91.6
D 1 47 1851326 20215.1 364 351 91.6
D 2 249 463339 5056.44 364 351 91.6

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