ASTROSAT CZTI

Data Quality Report

Orbit 41737

Creation date: 2024-06-27T22:32:16.183380
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_077T11_9000005696_41737cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41737cztM0_level2_quad_clean.evt
Size (bytes)452,090,88082,077,120
Size431.1 MB 78.3 MB
Events in quadrant A2,900,760577,449
Events in quadrant B2,210,279593,139
Events in quadrant C2,915,662544,718
Events in quadrant D8,325,392424,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116101
B099171
C0114931
D0281452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4929871.765064%
B492930.060864%
C49301503.042596%
D4929125725.502130%

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 7052 4929 80 80 1.13% 1.62%
B 7052 4929 0 0 0.00% 0.00%
C 7053 4930 145 145 2.06% 2.94%
D 7052 4929 1579 1579 22.39% 32.03%

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 472888 4118.43 555 544 114.7
A 15 223 267344 2326.26 555 544 114.7
A 13 254 8151 66.33 555 544 114.7
B 0 183 13979 125.15 552 538 107.4
B 12 111 12910 115.19 552 538 107.4
B 11 111 12205 108.63 552 538 107.4
C 0 10 573155 4618.07 528 532 124.0
C 15 214 197817 1591.06 528 532 124.0
C 0 207 58743 469.46 528 532 124.0
D 12 79 4955242 39088.29 509 495 126.8
D 12 233 614385 4843.01 509 495 126.8
D 13 249 329810 2597.99 509 495 126.8

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