ASTROSAT CZTI

Data Quality Report

Orbit 17995

Creation date: 2024-06-27T17:43:35.710447
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/AS1A05_108T02_9000002676_17995cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17995cztM0_level2_quad_clean.evt
Size (bytes)519,474,24097,171,200
Size495.4 MB 92.7 MB
Events in quadrant A3,606,136615,615
Events in quadrant B3,836,981624,105
Events in quadrant C3,660,586598,158
Events in quadrant D4,126,584590,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156262
B0162782
C0156002
D0172972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73841091.476165%
B73851882.545701%
C7385941.272850%
D73851562.112390%

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 8874 7386 17 17 0.19% 0.23%
B 8875 7387 31 31 0.35% 0.42%
C 8875 7387 0 0 0.00% 0.00%
D 8875 7387 98 98 1.10% 1.33%

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 15 174 70482 373.69 913 893 186.2
A 14 111 14022 70.5 913 893 186.2
A 4 2 13345 66.87 913 893 186.2
B 7 220 84622 476.5 910 885 175.7
B 5 172 75965 427.24 910 885 175.7
B 0 197 57750 323.59 910 885 175.7
C 14 238 134736 647.59 875 881 206.7
C 3 233 66890 319.35 875 881 206.7
C 0 207 25287 118.08 875 881 206.7
D 11 176 346012 1499.64 873 855 230.2
D 5 222 296400 1284.09 873 855 230.2
D 9 64 59159 253.32 873 855 230.2

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