ASTROSAT CZTI

Data Quality Report

Orbit 20190508_T03_112T01_9000002896_level2

Creation date: 2019-05-10T15:24:03.277730
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/AS1T03_112T01_9000002896cztM0_level2_bc.evt modeM0/AS1T03_112T01_9000002896cztM0_level2_quad_clean.evt
Size (bytes)1,623,876,480387,423,360
Size1.5 GB 369.5 MB
Events in quadrant A6,093,9912,658,643
Events in quadrant B6,629,4742,697,715
Events in quadrant C7,001,8162,561,643
Events in quadrant D27,428,8891,776,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0605680
B0621800
C0643400
D01576160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29624670.226168%
B296241930.651499%
C296243341.127464%
D296241306944.116257%

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 35159 29626 2 2 0.01% 0.01%
B 35159 29624 22 22 0.06% 0.07%
C 35159 29624 2 2 0.01% 0.01%
D 35159 29613 4164 4164 11.84% 14.06%

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 13 254 38170 107.47 1564 1540 340.8
A 5 16 23764 65.21 1564 1540 340.8
A 4 2 21319 58.03 1564 1540 340.8
B 3 64 174464 581.25 1584 1548 297.5
B 7 220 106644 353.27 1584 1548 297.5
B 0 198 84177 277.75 1584 1548 297.5
C 3 233 1003817 2798.83 1508 1498 358.1
C 9 221 146782 405.68 1508 1498 358.1
C 7 247 29897 79.3 1508 1498 358.1
D 7 238 21123833 79952.45 1113 1076 264.2
D 13 104 951605 3597.88 1113 1076 264.2
D 1 52 540685 2042.49 1113 1076 264.2

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