ASTROSAT CZTI

Data Quality Report

Orbit 14927

Creation date: 2024-06-27T17:01:26.175677
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/AS1T02_055T01_9000002206_14927cztM0_level2.evt modeM0/AS1T02_055T01_9000002206_14927cztM0_level2_quad_clean.evt
Size (bytes)363,346,56080,700,480
Size346.5 MB 77.0 MB
Events in quadrant A2,558,910527,701
Events in quadrant B2,921,806520,670
Events in quadrant C2,549,725510,169
Events in quadrant D2,609,110510,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111392
B0122711
C0110231
D0116491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5352881.644245%
B53522053.830344%
C5352891.662930%
D53521182.204783%

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 5638 5354 0 0 0.00% 0.00%
B 5638 5354 33 33 0.59% 0.62%
C 5638 5354 0 0 0.00% 0.00%
D 5638 5354 25 25 0.44% 0.47%

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 12 189 44966 341.88 637 624 129.7
A 3 1 44425 337.71 637 624 129.7
A 1 162 9165 65.85 637 624 129.7
B 10 16 363404 3038.8 629 614 119.4
B 0 229 42397 349.98 629 614 119.4
B 0 189 15239 122.5 629 614 119.4
C 3 233 145150 1015.24 612 615 142.4
C 9 54 11977 79.81 612 615 142.4
C 13 61 4570 27.78 612 615 142.4
D 2 33 104463 709.29 612 596 146.4
D 2 136 64638 437.33 612 596 146.4
D 13 170 48366 326.21 612 596 146.4

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