ASTROSAT CZTI

Data Quality Report

Orbit 39710

Creation date: 2024-06-27T22:08:04.604659
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_022T01_9000005494_39710cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39710cztM0_level2_quad_clean.evt
Size (bytes)388,658,88085,985,280
Size370.7 MB 82.0 MB
Events in quadrant A3,454,512570,614
Events in quadrant B2,415,979611,944
Events in quadrant C4,723,863537,597
Events in quadrant D3,395,541526,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134383
B0105662
C0173892
D0137872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50993156.177682%
B5099110.215729%
C509951110.021573%
D50991863.647774%

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 7041 5100 249 249 3.54% 4.88%
B 7041 5100 3 3 0.04% 0.06%
C 7041 5100 474 474 6.73% 9.29%
D 7041 5100 162 162 2.30% 3.18%

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 13 248 849979 7679.55 548 538 110.6
A 10 83 397851 3591.99 548 538 110.6
A 15 174 68927 618.29 548 538 110.6
B 0 190 68152 620.44 568 553 109.0
B 0 230 38680 349.94 568 553 109.0
B 5 255 33681 304.05 568 553 109.0
C 15 208 1595612 12841.48 533 537 124.2
C 9 187 819385 6592.31 533 537 124.2
C 15 214 202024 1622.11 533 537 124.2
D 12 227 398505 2938.78 548 531 135.4
D 13 249 357456 2635.66 548 531 135.4
D 12 233 357323 2634.68 548 531 135.4

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