ASTROSAT CZTI

Data Quality Report

Orbit 18861

Creation date: 2024-06-27T17:55:46.847045
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/AS1T03_094T01_9000002816_18861cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18861cztM0_level2_quad_clean.evt
Size (bytes)488,669,76093,473,280
Size466.0 MB 89.1 MB
Events in quadrant A3,204,670612,454
Events in quadrant B3,518,072620,289
Events in quadrant C3,684,189590,671
Events in quadrant D3,969,085571,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129761
B0140761
C0145041
D0158011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242330.528677%
B6243891.425597%
C62431682.691014%
D62431131.810027%

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 7547 6243 1 1 0.01% 0.02%
B 7548 6244 34 34 0.45% 0.54%
C 7548 6244 88 88 1.17% 1.41%
D 7548 6244 88 88 1.17% 1.41%

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 13 254 7937 42.87 828 813 166.2
A 0 226 7373 39.47 828 813 166.2
A 4 2 7278 38.9 828 813 166.2
B 7 220 225970 1469.98 814 797 153.2
B 0 245 26892 170.35 814 797 153.2
B 12 111 17147 106.74 814 797 153.2
C 0 207 302083 1676.29 776 782 179.7
C 3 233 215098 1192.35 776 782 179.7
C 14 238 121614 672.25 776 782 179.7
D 7 238 403888 2099.72 795 774 192.0
D 1 52 307766 1599.05 795 774 192.0
D 9 1 158276 820.39 795 774 192.0

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