ASTROSAT CZTI

Data Quality Report

Orbit 20190821_A05_155T04_9000003114_level2

Creation date: 2019-08-23T11:38:09.838774
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/AS1A05_155T04_9000003114cztM0_level2_bc.evt modeM0/AS1A05_155T04_9000003114cztM0_level2_quad_clean.evt
Size (bytes)1,519,079,040597,614,400
Size1.4 GB 569.9 MB
Events in quadrant A8,908,4723,849,215
Events in quadrant B11,353,3163,844,548
Events in quadrant C8,569,0643,720,081
Events in quadrant D14,124,4703,620,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0917510
B01008330
C0917370
D01070600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09080
B09080
C09080
D09080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A446946271.402873%
B4469411882.658075%
C446947401.655703%
D4469412572.812458%

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 49869 44696 1 1 0.00% 0.00%
B 49869 44692 43 43 0.09% 0.10%
C 49869 44695 0 0 0.00% 0.00%
D 49869 44696 232 232 0.47% 0.52%

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 13 254 60787 115.87 2290 2239 505.3
A 12 96 44661 83.95 2290 2239 505.3
A 0 226 14936 25.13 2290 2239 505.3
B 0 182 936512 2106.54 2300 2238 443.5
B 7 220 525271 1179.3 2300 2238 443.5
B 0 219 274637 614.19 2300 2238 443.5
C 10 91 30525 54.08 2216 2200 523.7
C 13 61 12932 20.49 2216 2200 523.7
C 9 54 10404 15.66 2216 2200 523.7
D 1 52 1180764 2255.16 2254 2175 522.6
D 9 1 1010172 1928.74 2254 2175 522.6
D 1 239 717750 1369.21 2254 2175 522.6

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