ASTROSAT CZTI

Data Quality Report

Orbit 14691

Creation date: 2024-06-27T16:58:31.863551
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/AS1A04_011T07_9000002172_14691cztM0_level2.evt modeM0/AS1A04_011T07_9000002172_14691cztM0_level2_quad_clean.evt
Size (bytes)513,673,920118,667,520
Size489.9 MB 113.2 MB
Events in quadrant A3,698,940811,704
Events in quadrant B3,485,080796,831
Events in quadrant C4,406,149770,530
Events in quadrant D3,533,962769,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152133
B0144242
C0180692
D0145812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63801011.583072%
B6380961.504702%
C6380961.504702%
D6380951.489028%

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 7701 6381 0 0 0.00% 0.00%
B 7701 6381 4 4 0.05% 0.06%
C 7701 6381 3 3 0.04% 0.05%
D 7701 6381 32 32 0.42% 0.50%

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 3 1 100578 564.58 880 865 176.6
A 12 189 79058 442.73 880 865 176.6
A 1 162 52517 292.45 880 865 176.6
B 10 16 42554 260.83 855 837 159.9
B 0 205 36407 222.4 855 837 159.9
B 0 214 24504 147.98 855 837 159.9
C 3 233 1145884 6067.77 824 829 188.7
C 0 207 36928 191.29 824 829 188.7
C 3 234 9789 47.48 824 829 188.7
D 9 1 138557 629.56 843 823 218.8
D 10 199 63749 287.62 843 823 218.8
D 13 172 42111 188.72 843 823 218.8

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