ASTROSAT CZTI

Data Quality Report

Orbit 20180124_A04_212T03_9000001866_level2

Creation date: 2018-07-24T16:44:21.523266
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_212T03_9000001866cztM0_level2_bc.evt modeM0/AS1A04_212T03_9000001866cztM0_level2_quad_clean.evt
Size (bytes)369,656,640140,584,320
Size352.5 MB 134.1 MB
Events in quadrant A2,443,497855,877
Events in quadrant B2,626,093868,568
Events in quadrant C2,410,527850,332
Events in quadrant D2,852,361816,023

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255530
B0259470
C0256400
D0268130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12534990.789852%
B12534930.741982%
C12534810.646242%
D125341511.204723%

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 13685 12534 1 1 0.01% 0.01%
B 13685 12533 0 0 0.00% 0.00%
C 13685 12534 1 1 0.01% 0.01%
D 13685 12534 3 3 0.02% 0.02%

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 12 189 48708 353.32 601 586 136.2
A 13 248 33954 244.99 601 586 136.2
A 3 1 15641 110.54 601 586 136.2
B 3 209 87462 732.53 607 588 118.6
B 0 214 61073 510.01 607 588 118.6
B 11 51 60755 507.33 607 588 118.6
C 15 208 90515 685.25 584 574 131.3
C 14 234 15024 110.09 584 574 131.3
C 8 128 8025 56.77 584 574 131.3
D 1 52 382459 2772.29 585 562 137.8
D 13 249 50239 360.62 585 562 137.8
D 2 234 46863 336.11 585 562 137.8

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