ASTROSAT CZTI

Data Quality Report

Orbit 40638

Creation date: 2024-06-27T22:18:34.386301
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_029T01_9000005556_40638cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40638cztM0_level2_quad_clean.evt
Size (bytes)338,264,64087,287,040
Size322.6 MB 83.2 MB
Events in quadrant A2,800,963599,047
Events in quadrant B3,054,653611,451
Events in quadrant C2,842,160574,541
Events in quadrant D3,397,909476,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116573
B0126292
C0119252
D0138272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545770.128276%
B5457641.172806%
C5457260.476452%
D545768912.625985%

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 5458 4 4 0.06% 0.07%
B 7070 5458 35 35 0.50% 0.64%
C 7070 5458 26 26 0.37% 0.48%
D 7070 5458 126 126 1.78% 2.31%

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 470963 3759.78 601 589 125.1
A 3 137 6920 50.6 601 589 125.1
A 2 79 6122 44.23 601 589 125.1
B 0 190 351594 2990.37 593 575 117.4
B 0 229 275542 2342.47 593 575 117.4
B 0 230 53407 450.08 593 575 117.4
C 14 254 291287 2104.1 584 587 138.2
C 15 214 240934 1739.64 584 587 138.2
C 15 159 19911 139.87 584 587 138.2
D 12 227 847943 6163.03 546 529 137.5
D 12 191 178585 1294.95 546 529 137.5
D 2 250 110391 799.0 546 529 137.5

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