ASTROSAT CZTI

Data Quality Report

Orbit 42956

Creation date: 2024-06-27T22:46:16.094287
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/AS1T05_143T01_9000005834_42956cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42956cztM0_level2_quad_clean.evt
Size (bytes)316,304,64089,452,800
Size301.7 MB 85.3 MB
Events in quadrant A3,101,784590,517
Events in quadrant B2,730,866608,457
Events in quadrant C2,537,886586,809
Events in quadrant D2,910,199538,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126682
B0121722
C0112102
D0126482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54881021.858601%
B5488871.585277%
C5488230.419096%
D5488681.239067%

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 7101 5489 65 65 0.92% 1.18%
B 7100 5487 60 60 0.85% 1.09%
C 7100 5487 18 18 0.25% 0.33%
D 7100 5487 53 53 0.75% 0.97%

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 565330 4781.36 576 563 118.1
A 15 237 261659 2210.46 576 563 118.1
A 15 222 21255 175.18 576 563 118.1
B 4 171 355036 3160.88 578 562 112.1
B 4 81 58619 517.7 578 562 112.1
B 5 255 26978 235.55 578 562 112.1
C 15 214 221626 1679.82 571 573 131.6
C 12 2 45306 339.93 571 573 131.6
C 14 254 32790 244.82 571 573 131.6
D 2 249 174218 1279.58 564 548 135.7
D 13 249 162031 1189.78 564 548 135.7
D 12 6 77996 570.63 564 548 135.7

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