ASTROSAT CZTI

Data Quality Report

Orbit 20171001_A04_130T01_9000001572_level2

Creation date: 2017-10-18T17:45:37.976702
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/AS1A04_130T01_9000001572cztM0_level2.evt modeM0/AS1A04_130T01_9000001572cztM0_level2_quad_clean.evt
Size (bytes)3,014,585,280397,676,160
Size2.8 GB 379.3 MB
Events in quadrant A21,267,6422,412,228
Events in quadrant B24,979,1222,436,717
Events in quadrant C16,005,8552,501,643
Events in quadrant D26,639,6142,242,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0868660
B0985490
C0735760
D01036750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07300
B07380
C07400
D07200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3550812793.602005%
B3562326357.396906%
C360981410.390603%
D3525928358.040500%

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 43040 37274 723 723 1.68% 1.94%
B 43040 37354 1337 1337 3.11% 3.58%
C 43040 37872 1 1 0.00% 0.00%
D 43040 36794 2416 2416 5.61% 6.57%

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 8 5 4665810 5636.04 4096 4010 827.1
A 15 223 364803 436.19 4096 4010 827.1
A 15 239 137790 161.74 4096 4010 827.1
B 4 239 8805706 11260.62 4083 3980 781.6
B 0 187 96839 118.8 4083 3980 781.6
B 0 214 90744 111.0 4083 3980 781.6
C 13 61 29941 27.21 4090 4103 949.4
C 14 234 22346 19.21 4090 4103 949.4
C 12 4 21534 18.36 4090 4103 949.4
D 1 52 9772336 10538.99 3831 3718 926.9
D 5 222 487759 522.21 3831 3718 926.9
D 8 195 444638 475.69 3831 3718 926.9

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