ASTROSAT CZTI

Data Quality Report

Orbit 42774

Creation date: 2024-06-27T22:44:04.592350
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/AS1A05_013T01_9000005822_42774cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42774cztM0_level2_quad_clean.evt
Size (bytes)320,186,88090,388,800
Size305.4 MB 86.2 MB
Events in quadrant A3,099,694608,317
Events in quadrant B2,533,819609,414
Events in quadrant C2,791,515599,633
Events in quadrant D3,004,748539,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124102
B0113602
C0118533
D0129592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5421300.553403%
B5421230.424276%
C5420240.442804%
D54212194.039845%

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 7125 5422 21 21 0.29% 0.39%
B 7125 5422 19 19 0.27% 0.35%
C 7124 5421 27 27 0.38% 0.50%
D 7125 5422 213 213 2.99% 3.93%

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 611658 4969.23 596 584 123.0
A 13 248 128914 1043.57 596 584 123.0
A 12 189 22189 175.69 596 584 123.0
B 5 172 91111 789.35 590 574 114.7
B 15 33 47727 411.11 590 574 114.7
B 0 245 35469 304.23 590 574 114.7
C 15 214 221640 1630.03 578 582 135.6
C 14 254 146483 1075.84 578 582 135.6
C 10 34 132700 974.21 578 582 135.6
D 10 118 451432 3197.43 569 553 141.0
D 13 249 217298 1537.06 569 553 141.0
D 9 19 36057 251.78 569 553 141.0

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