ASTROSAT CZTI

Data Quality Report

Orbit 16649

Creation date: 2024-06-27T17:25:26.811503
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_002T07_9000002458_16649cztM0_level2.evt modeM0/AS1A05_002T07_9000002458_16649cztM0_level2_quad_clean.evt
Size (bytes)65,018,88016,038,720
Size62.0 MB 15.3 MB
Events in quadrant A435,021106,035
Events in quadrant B554,447107,934
Events in quadrant C435,594103,886
Events in quadrant D482,643100,300

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018521
B022051
C018341
D020271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A850121.411765%
B850708.235294%
C850212.470588%
D850222.588235%

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 1691 852 0 0 0.00% 0.00%
B 1691 852 7 7 0.41% 0.82%
C 1691 852 0 0 0.00% 0.00%
D 1691 852 12 12 0.71% 1.41%

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 12655 533.12 106 103 23.5
A 12 96 10189 428.38 106 103 23.5
A 15 9 1070 41.07 106 103 23.5
B 15 35 87242 3777.76 107 104 23.1
B 0 189 16430 707.79 107 104 23.1
B 0 198 14212 611.63 107 104 23.1
C 3 233 27048 1066.4 100 100 25.3
C 14 238 16119 633.91 100 100 25.3
C 13 61 692 23.43 100 100 25.3
D 15 0 38829 1502.53 98 95 25.8
D 5 222 31124 1203.64 98 95 25.8
D 1 52 20496 791.37 98 95 25.8

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