ASTROSAT CZTI

Data Quality Report

Orbit 20180731_A04_126T01_9000002262_level2

Creation date: 2018-08-02T10:22:06.342845
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_126T01_9000002262cztM0_level2_bc.evt modeM0/AS1A04_126T01_9000002262cztM0_level2_quad_clean.evt
Size (bytes)3,191,011,2001,249,168,320
Size3.0 GB 1.2 GB
Events in quadrant A18,326,8318,000,741
Events in quadrant B23,787,0888,018,488
Events in quadrant C22,966,9607,964,389
Events in quadrant D25,356,7057,613,571

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880770
B02055200
C01990920
D02095410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018520
B018520
C018520
D018520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A910477600.834734%
B9104718692.052786%
C9104711231.233429%
D9104720422.242798%

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 104358 91045 4 4 0.00% 0.00%
B 104358 91042 166 166 0.16% 0.18%
C 104358 91042 11 11 0.01% 0.01%
D 104358 91043 542 542 0.52% 0.60%

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 9 143 269974 262.3 4645 4555 1011.9
A 15 239 130169 124.14 4645 4555 1011.9
A 4 2 46983 41.93 4645 4555 1011.9
B 10 16 2692427 3036.57 4665 4542 885.2
B 10 245 829437 931.91 4665 4542 885.2
B 0 189 285166 317.03 4665 4542 885.2
C 3 233 5057779 5046.91 4530 4471 1001.3
C 7 247 120460 115.84 4530 4471 1001.3
C 13 61 26523 22.02 4530 4471 1001.3
D 2 33 2449967 2327.88 4539 4378 1050.6
D 1 20 1388581 1317.58 4539 4378 1050.6
D 1 255 1222197 1159.2 4539 4378 1050.6

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