ASTROSAT CZTI

Data Quality Report

Orbit 20170128_G06_036T01_9000000988_level2

Creation date: 2017-09-22T23:56:09.091076
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/AS1G06_036T01_9000000988cztM0_level2.evt modeM0/AS1G06_036T01_9000000988cztM0_level2_quad_clean.evt
Size (bytes)4,009,236,480654,062,400
Size3.7 GB 623.8 MB
Events in quadrant A26,607,2303,998,285
Events in quadrant B28,386,7874,060,337
Events in quadrant C30,947,9194,050,972
Events in quadrant D31,691,0443,849,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011400
B011400
C011400
D011400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01169340
B01214240
C01298330
D01339370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561508941.592164%
B5614912472.220877%
C561487871.401653%
D5615013222.354408%

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 62930 56152 7 7 0.01% 0.01%
B 62930 56155 272 272 0.43% 0.48%
C 62930 56156 129 129 0.20% 0.23%
D 62930 56157 577 577 0.92% 1.03%

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 15 846777 625.19 6618 6462 1344.1
A 13 248 92737 64.19 6618 6462 1344.1
A 14 111 82249 56.38 6618 6462 1344.1
B 10 16 818613 637.44 6677 6515 1274.0
B 4 81 715269 556.32 6677 6515 1274.0
B 0 214 648998 504.3 6677 6515 1274.0
C 9 68 5594771 3696.55 6478 6503 1511.8
C 13 61 49482 28.43 6478 6503 1511.8
C 12 4 29909 15.48 6478 6503 1511.8
D 2 216 3896712 2473.48 6447 6245 1572.9
D 2 14 1100234 695.54 6447 6245 1572.9
D 13 137 955068 603.24 6447 6245 1572.9

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