ASTROSAT CZTI

Data Quality Report

Orbit 20170510_G07_013T02_9000001216_level2

Creation date: 2017-09-23T21:56:27.662415
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/AS1G07_013T02_9000001216cztM0_level2.evt modeM0/AS1G07_013T02_9000001216cztM0_level2_quad_clean.evt
Size (bytes)4,036,841,280873,956,160
Size3.8 GB 833.5 MB
Events in quadrant A28,920,5965,604,417
Events in quadrant B29,864,7135,695,031
Events in quadrant C28,061,1105,648,334
Events in quadrant D31,358,0455,408,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012240
B012240
C012240
D012240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01273730
B01295510
C01261000
D01355830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600206941.156281%
B6001811371.894432%
C600186081.013029%
D6001710941.822817%

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 69230 60025 94 94 0.14% 0.16%
B 69230 60026 357 357 0.52% 0.59%
C 69230 60026 149 149 0.22% 0.25%
D 69230 60027 563 563 0.81% 0.94%

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 13 251 1634442 1177.93 6903 6742 1381.8
A 5 16 332071 235.43 6903 6742 1381.8
A 15 174 188116 131.26 6903 6742 1381.8
B 10 16 1599781 1238.92 6971 6800 1285.8
B 4 48 313846 238.8 6971 6800 1285.8
B 0 214 311676 237.11 6971 6800 1285.8
C 4 254 746727 478.36 6795 6828 1546.7
C 1 16 535807 342.0 6795 6828 1546.7
C 14 234 152233 94.01 6795 6828 1546.7
D 1 52 3183953 1913.37 6728 6551 1660.6
D 2 152 902722 539.66 6728 6551 1660.6
D 7 71 565446 336.55 6728 6551 1660.6

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