ASTROSAT CZTI

Data Quality Report

Orbit 15678

Creation date: 2024-06-27T17:12:00.397241
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_084T01_9000002318_15678cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15678cztM0_level2_quad_clean.evt
Size (bytes)461,399,04093,366,720
Size440.0 MB 89.0 MB
Events in quadrant A3,241,784594,349
Events in quadrant B3,529,376598,356
Events in quadrant C3,378,140589,989
Events in quadrant D3,367,095575,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138473
B0145352
C0139422
D0144082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727941.397354%
B67271191.768991%
C67271502.229820%
D67281111.649822%

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 7663 6729 0 0 0.00% 0.00%
B 7663 6729 14 14 0.18% 0.21%
C 7663 6729 0 0 0.00% 0.00%
D 7664 6730 34 34 0.44% 0.51%

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 13 248 13235 73.97 838 821 167.8
A 0 226 7273 38.45 838 821 167.8
A 12 194 6212 32.12 838 821 167.8
B 4 173 104588 664.42 833 813 156.2
B 0 189 57255 361.37 833 813 156.2
B 4 216 28968 180.26 833 813 156.2
C 14 238 127090 678.34 806 811 186.2
C 3 233 104032 554.47 806 811 186.2
C 13 61 5829 26.96 806 811 186.2
D 10 70 105379 520.46 819 797 200.9
D 1 52 79275 390.55 819 797 200.9
D 2 234 25268 121.78 819 797 200.9

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