ASTROSAT CZTI

Data Quality Report

Orbit 12048

Creation date: 2024-06-27T16:21:43.464179
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/AS1A03_085T02_9000001784_12048cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12048cztM0_level2_quad_clean.evt
Size (bytes)643,086,72095,757,120
Size613.3 MB 91.3 MB
Events in quadrant A4,382,511597,933
Events in quadrant B5,946,901584,933
Events in quadrant C3,725,981592,604
Events in quadrant D4,872,509561,829

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183663
B0232252
C0167702
D0197262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80872052.534933%
B80874986.158031%
C80871151.422035%
D80872973.672561%

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 8668 8090 49 49 0.57% 0.61%
B 8668 8089 192 192 2.22% 2.37%
C 8668 8090 0 0 0.00% 0.00%
D 8668 8090 173 173 2.00% 2.14%

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 13 251 307533 1541.19 969 947 198.9
A 1 162 132640 662.01 969 947 198.9
A 1 178 57863 286.11 969 947 198.9
B 4 239 1636438 8750.41 957 929 186.9
B 15 204 245595 1309.03 957 929 186.9
B 4 206 130094 691.07 957 929 186.9
C 7 247 19539 83.68 949 956 222.1
C 14 234 8796 35.31 949 956 222.1
C 13 61 7091 27.63 949 956 222.1
D 1 52 452628 1999.89 929 901 225.9
D 13 122 400763 1770.28 929 901 225.9
D 8 195 355536 1570.05 929 901 225.9

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