ASTROSAT CZTI

Data Quality Report

Orbit 42100

Creation date: 2024-06-27T22:36:50.031641
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_088T08_9000005748_42100cztM0_level2.fits modeM0/AS1A12_088T08_9000005748_42100cztM0_level2_quad_clean.evt
Size (bytes)404,942,40083,952,000
Size386.2 MB 80.1 MB
Events in quadrant A5,596,619550,058
Events in quadrant B2,318,660600,146
Events in quadrant C2,408,754559,513
Events in quadrant D4,259,266465,957

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202373
B0106102
C0104852
D0163582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52243827.312404%
B5224110.210567%
C522460.114855%
D522459511.389740%

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 7226 5225 333 333 4.61% 6.37%
B 7226 5225 1 1 0.01% 0.02%
C 7226 5225 0 0 0.00% 0.00%
D 7226 5225 525 525 7.27% 10.05%

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 15 222 2882598 25118.53 560 550 114.7
A 10 83 501421 4365.35 560 550 114.7
A 15 223 25290 215.62 560 550 114.7
B 5 255 29022 255.87 571 556 111.3
B 15 85 18124 157.91 571 556 111.3
B 0 229 15009 129.91 571 556 111.3
C 15 214 216196 1629.03 560 561 132.4
C 12 249 4498 29.74 560 561 132.4
C 15 159 4458 29.44 560 561 132.4
D 13 249 1587124 12273.8 524 509 129.3
D 12 6 302376 2335.2 524 509 129.3
D 1 52 223117 1722.06 524 509 129.3

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