ASTROSAT CZTI

Data Quality Report

Orbit 41075

Creation date: 2024-06-27T22:24:08.784130
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_095T02_9000005596_41075cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41075cztM0_level2_quad_clean.evt
Size (bytes)474,649,92092,390,400
Size452.7 MB 88.1 MB
Events in quadrant A3,526,097645,107
Events in quadrant B3,732,950630,095
Events in quadrant C3,092,382635,674
Events in quadrant D6,749,888465,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142813
B0153592
C0129652
D0241972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6025170.282158%
B60253375.593361%
C6025520.863071%
D6025140523.319502%

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 7338 6026 8 8 0.11% 0.13%
B 7338 6026 227 227 3.09% 3.77%
C 7338 6026 42 42 0.57% 0.70%
D 7338 6026 1172 1172 15.97% 19.45%

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 571644 4150.97 663 647 137.6
A 12 189 372972 2706.69 663 647 137.6
A 13 254 11771 80.87 663 647 137.6
B 0 186 902022 7065.11 647 629 127.6
B 5 255 176531 1378.72 647 629 127.6
B 0 229 46217 357.32 647 629 127.6
C 15 214 258954 1693.52 649 655 152.5
C 12 249 122696 800.15 649 655 152.5
C 14 254 98315 640.3 649 655 152.5
D 13 249 2526533 17944.36 569 552 140.8
D 12 79 1553097 11029.15 569 552 140.8
D 2 249 292431 2073.48 569 552 140.8

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