ASTROSAT CZTI

Data Quality Report

Orbit 17524

Creation date: 2024-06-27T17:37:35.250682
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_140T01_9000002596_17524cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17524cztM0_level2_quad_clean.evt
Size (bytes)404,703,36084,041,280
Size386.0 MB 80.1 MB
Events in quadrant A2,942,699534,675
Events in quadrant B2,906,365546,890
Events in quadrant C3,053,590521,720
Events in quadrant D2,937,333514,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127051
B0124801
C0127841
D0128381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6122450.735054%
B6123410.669606%
C6123460.751266%
D6123390.636943%

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 7202 6123 12 12 0.17% 0.20%
B 7203 6124 0 0 0.00% 0.00%
C 7203 6124 0 0 0.00% 0.00%
D 7203 6124 7 7 0.10% 0.11%

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 93092 624.49 741 726 147.9
A 0 226 6504 39.07 741 726 147.9
A 3 137 5346 31.24 741 726 147.9
B 12 111 16972 114.82 741 722 141.5
B 11 111 14485 97.25 741 722 141.5
B 14 111 12740 84.92 741 722 141.5
C 14 238 112030 654.63 722 727 170.0
C 3 233 98357 574.21 722 727 170.0
C 5 218 28281 162.06 722 727 170.0
D 5 222 119734 677.28 726 706 175.7
D 13 189 55440 311.44 726 706 175.7
D 2 234 25742 142.46 726 706 175.7

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