ASTROSAT CZTI

Data Quality Report

Orbit 48272

Creation date: 2024-09-06T09:09:30.206483
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/AS1A13_029T01_9000006422_48272cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48272cztM0_level2_quad_clean.evt
Size (bytes)479,496,960114,445,440
Size457.3 MB 109.1 MB
Events in quadrant A7,038,647763,417
Events in quadrant B3,302,620798,371
Events in quadrant C3,214,923757,205
Events in quadrant D3,682,670687,603

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262821
B0139941
C0139241
D0152081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65822233.388028%
B6582901.367366%
C6582640.972349%
D65821462.218171%

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 7763 6583 44 44 0.57% 0.67%
B 7763 6583 10 10 0.13% 0.15%
C 7763 6583 13 13 0.17% 0.20%
D 7763 6583 86 86 1.11% 1.31%

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 4004563 24823.58 784 768 161.3
A 13 254 13423 78.46 784 768 161.3
A 3 137 8787 49.72 784 768 161.3
B 4 21 76273 493.26 780 755 153.1
B 0 186 49668 319.49 780 755 153.1
B 5 255 47356 304.39 780 755 153.1
C 14 254 142373 786.51 767 771 180.0
C 12 2 78627 432.44 767 771 180.0
C 13 61 5156 24.36 767 771 180.0
D 7 204 157453 791.7 777 753 197.9
D 2 249 112238 563.26 777 753 197.9
D 12 3 106816 535.87 777 753 197.9

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