ASTROSAT CZTI

Data Quality Report

Orbit 20181023_C04_009T01_9000002448_level2

Creation date: 2018-10-25T10:15:37.688830
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/AS1C04_009T01_9000002448cztM0_level2_bc.evt modeM0/AS1C04_009T01_9000002448cztM0_level2_quad_clean.evt
Size (bytes)3,232,497,6001,683,694,080
Size3.0 GB 1.6 GB
Events in quadrant A19,491,11711,281,631
Events in quadrant B24,033,24211,522,940
Events in quadrant C22,127,99311,222,264
Events in quadrant D26,127,61910,821,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900310
B02047280
C01987920
D02114010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018280
B018280
C018280
D018280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8980310871.210427%
B8980312821.427569%
C8980311271.254969%
D8980326722.975402%

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 104784 89805 40 40 0.04% 0.04%
B 104784 89805 26 26 0.02% 0.03%
C 104784 89807 0 0 0.00% 0.00%
D 104784 89805 442 442 0.42% 0.49%

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 15 174 1295384 1304.04 4536 4450 989.9
A 9 143 331283 330.15 4536 4450 989.9
A 15 69 327174 326.0 4536 4450 989.9
B 15 35 1444918 1645.13 4624 4509 875.6
B 0 85 870751 989.36 4624 4509 875.6
B 0 189 699810 794.12 4624 4509 875.6
C 3 233 3539318 3349.01 4473 4458 1055.5
C 7 247 1226690 1157.97 4473 4458 1055.5
C 3 232 110826 100.78 4473 4458 1055.5
D 1 52 4723792 4488.54 4489 4328 1051.4
D 2 16 1843469 1749.15 4489 4328 1051.4
D 10 70 795798 752.74 4489 4328 1051.4

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