ASTROSAT CZTI

Data Quality Report

Orbit 24510

Creation date: 2024-06-27T19:06:44.976144
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_183T01_9000003606_24510cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24510cztM0_level2_quad_clean.evt
Size (bytes)567,976,320131,757,120
Size541.7 MB 125.7 MB
Events in quadrant A4,719,273882,912
Events in quadrant B3,909,939900,243
Events in quadrant C3,583,963852,944
Events in quadrant D4,470,232823,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191042
B0165772
C0157342
D0185042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76411161.518126%
B76411692.211752%
C76411521.989268%
D76412523.297998%

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 7831 7643 0 0 0.00% 0.00%
B 7831 7643 38 38 0.49% 0.50%
C 7831 7643 9 9 0.11% 0.12%
D 7831 7643 139 139 1.77% 1.82%

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 14 111 1273612 7124.3 893 875 178.6
A 13 254 11904 61.74 893 875 178.6
A 3 137 8222 41.13 893 875 178.6
B 3 64 342789 1982.9 898 874 172.4
B 12 111 21397 119.02 898 874 172.4
B 11 111 18551 102.52 898 874 172.4
C 14 238 136819 683.3 859 863 199.0
C 2 16 70867 351.83 859 863 199.0
C 10 9 13404 63.03 859 863 199.0
D 12 218 516947 2502.15 855 827 206.3
D 8 195 272210 1315.67 855 827 206.3
D 1 52 252440 1219.82 855 827 206.3

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