ASTROSAT CZTI

Data Quality Report

Orbit 20200506_A08_003T15_9000003648_level2

Creation date: 2020-05-11T13:51:50.835167
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/AS1A08_003T15_9000003648cztM0_level2_bc.evt modeM0/AS1A08_003T15_9000003648cztM0_level2_quad_clean.evt
Size (bytes)1,030,360,320366,390,720
Size982.6 MB 349.4 MB
Events in quadrant A6,453,9812,303,650
Events in quadrant B6,378,2302,341,013
Events in quadrant C6,265,2112,219,901
Events in quadrant D10,051,2462,164,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0634090
B0629710
C0635330
D0741690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06180
B06180
C06180
D06180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A300805131.705452%
B300804531.505984%
C300806172.051197%
D300806222.067819%

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 34435 30082 25 25 0.07% 0.08%
B 34435 30081 2 2 0.01% 0.01%
C 34435 30081 0 0 0.00% 0.00%
D 34435 30082 54 54 0.16% 0.18%

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 6 16 365030 1052.69 1568 1536 345.3
A 13 254 45573 127.53 1568 1536 345.3
A 4 2 27648 75.62 1568 1536 345.3
B 7 202 81520 266.86 1586 1547 299.7
B 0 189 72737 237.55 1586 1547 299.7
B 4 80 70445 229.9 1586 1547 299.7
C 7 247 244862 679.86 1511 1499 358.0
C 2 16 125043 345.13 1511 1499 358.0
C 5 112 74049 202.68 1511 1499 358.0
D 1 52 2259250 6334.7 1534 1477 356.4
D 8 195 1299328 3641.42 1534 1477 356.4
D 7 238 374428 1046.4 1534 1477 356.4

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