ASTROSAT CZTI

Data Quality Report

Orbit 20160419_G05_237T02_9000000422_level2

Creation date: 2016-09-06T17:51:13.880700
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1G05_237T02_9000000422cztM0_level2_bc.evt modeM0/AS1G05_237T02_9000000422cztM0_level2_quad_clean.evt
Size (bytes)3,412,304,6401,332,123,840
Size3.2 GB 1.2 GB
Events in quadrant A18,541,4228,553,308
Events in quadrant B30,698,4338,491,415
Events in quadrant C20,162,5838,746,207
Events in quadrant D27,917,2858,495,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018080
B018080
C018080
D018080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01839810
B02234890
C01900390
D02128590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04530
B04530
C04530
D04530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A884734090.462288%
B8847328633.236016%
C884738290.937009%
D8847320282.292225%

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 133651 88472 117 117 0.09% 0.13%
B 133651 88469 218 218 0.16% 0.25%
C 133651 88471 164 164 0.12% 0.19%
D 133651 88471 837 837 0.63% 0.95%

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 50 1444573 1662.74 3956 3872 866.5
A 14 249 957162 1100.21 3956 3872 866.5
A 12 247 308478 351.55 3956 3872 866.5
B 15 204 11021162 14292.76 3971 3856 770.8
B 0 230 1169143 1511.73 3971 3856 770.8
B 2 249 811616 1047.91 3971 3856 770.8
C 1 192 2547204 2845.95 3962 3904 893.7
C 6 80 894918 997.04 3962 3904 893.7
C 0 219 327355 361.94 3962 3904 893.7
D 13 114 5928815 6311.14 3949 3831 938.8
D 7 80 1758763 1869.31 3949 3831 938.8
D 2 152 1431037 1520.22 3949 3831 938.8

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