ASTROSAT CZTI

Data Quality Report

Orbit 20170616_G07_077T03_9000001310_level2

Creation date: 2017-09-24T05:39:59.503431
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/AS1G07_077T03_9000001310cztM0_level2.evt modeM0/AS1G07_077T03_9000001310cztM0_level2_quad_clean.evt
Size (bytes)2,890,725,120511,922,880
Size2.7 GB 488.2 MB
Events in quadrant A24,760,7443,158,874
Events in quadrant B18,967,1243,284,089
Events in quadrant C18,067,9503,264,630
Events in quadrant D23,050,6303,051,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08150
B08160
C08240
D08180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0600
C0580
D0590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0998460
B0834920
C0822310
D0971900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3979912383.110631%
B400147221.804368%
C400754661.162820%
D3987919454.877254%

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 53199 40880 325 325 0.61% 0.80%
B 53199 41097 9 9 0.02% 0.02%
C 53199 41168 7 7 0.01% 0.02%
D 53199 40961 1336 1336 2.51% 3.26%

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 8 5 5266426 5681.82 4591 4486 926.1
A 15 223 377249 402.51 4591 4486 926.1
A 15 239 363044 387.17 4591 4486 926.1
B 0 214 343613 384.77 4689 4575 881.1
B 4 80 197736 219.22 4689 4575 881.1
B 12 111 98235 106.29 4689 4575 881.1
C 14 67 96286 86.85 4583 4598 1055.7
C 10 22 67536 59.62 4583 4598 1055.7
C 13 61 34685 28.5 4583 4598 1055.7
D 12 227 3404028 3128.37 4419 4314 1086.7
D 1 52 1188715 1089.87 4419 4314 1086.7
D 12 233 609162 556.57 4419 4314 1086.7

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