ASTROSAT CZTI

Data Quality Report

Orbit 30873

Creation date: 2024-06-27T20:20:36.833918
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/AS1A10_071T49_9000004462_30873cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30873cztM0_level2_quad_clean.evt
Size (bytes)637,384,32092,600,640
Size607.9 MB 88.3 MB
Events in quadrant A3,179,095616,731
Events in quadrant B7,663,288607,051
Events in quadrant C3,355,254588,333
Events in quadrant D4,684,720556,697

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132832
B0271222
C0139133
D0180402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242330.528677%
B62423375.398911%
C6241701.121615%
D62412854.566576%

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 7482 6243 12 12 0.16% 0.19%
B 7482 6242 84 84 1.12% 1.35%
C 7481 6242 4 4 0.05% 0.06%
D 7481 6241 258 258 3.45% 4.13%

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 0 13 42985 263.63 808 794 160.0
A 0 31 11847 69.06 808 794 160.0
A 13 254 11834 68.98 808 794 160.0
B 6 36 2465460 16208.28 799 779 152.1
B 6 159 1788554 11756.8 799 779 152.1
B 5 172 87440 569.9 799 779 152.1
C 14 238 126737 697.66 774 781 180.5
C 8 229 74405 407.8 774 781 180.5
C 2 16 50485 275.31 774 781 180.5
D 12 233 707174 3948.84 758 742 178.9
D 8 195 516414 2882.52 758 742 178.9
D 1 52 426603 2380.49 758 742 178.9

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