ASTROSAT CZTI

Data Quality Report

Orbit 41530

Creation date: 2024-06-27T22:30:06.890789
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_035T02_9000005676_41530cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41530cztM0_level2_quad_clean.evt
Size (bytes)353,787,84090,817,920
Size337.4 MB 86.6 MB
Events in quadrant A2,909,377625,328
Events in quadrant B2,682,029633,264
Events in quadrant C3,113,244573,676
Events in quadrant D3,983,147550,181

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118763
B0114542
C0124622
D0153912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5243270.514972%
B5243300.572191%
C52432294.367728%
D52431953.719245%

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 7065 5244 10 10 0.14% 0.19%
B 7065 5244 12 12 0.17% 0.23%
C 7065 5244 223 223 3.16% 4.25%
D 7065 5244 214 214 3.03% 4.08%

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 533699 4331.44 599 587 123.1
A 13 248 29914 238.28 599 587 123.1
A 13 6 11935 92.2 599 587 123.1
B 0 190 149572 1305.71 594 578 114.1
B 0 186 133738 1166.95 594 578 114.1
B 0 245 27239 233.64 594 578 114.1
C 0 10 505840 3866.43 562 564 130.7
C 15 214 224686 1715.01 562 564 130.7
C 14 254 127651 972.48 562 564 130.7
D 5 222 656281 4765.24 573 560 137.6
D 12 79 438649 3183.67 573 560 137.6
D 12 217 178809 1295.37 573 560 137.6

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