ASTROSAT CZTI

Data Quality Report

Orbit 20190504_A05_229T02_9000002890_level2

Creation date: 2019-05-07T11:19:18.090401
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_229T02_9000002890cztM0_level2_bc.evt modeM0/AS1A05_229T02_9000002890cztM0_level2_quad_clean.evt
Size (bytes)7,363,503,3602,264,330,880
Size6.9 GB 2.1 GB
Events in quadrant A39,598,81614,483,715
Events in quadrant B42,772,16614,616,142
Events in quadrant C46,265,29714,078,563
Events in quadrant D82,274,06513,226,805

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03751530
B03887180
C04069230
D05364630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036220
B036220
C036220
D036220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02830
B02830
C02830
D02830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17779320711.164838%
B17779333381.877464%
C17779332631.835280%
D177793145648.191549%

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 206004 177779 35 35 0.02% 0.02%
B 206004 177780 143 143 0.07% 0.08%
C 206004 177778 9 9 0.00% 0.01%
D 206004 177764 2744 2744 1.33% 1.54%

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 5 16 795118 382.72 9639 9475 2052.8
A 4 2 724830 348.48 9639 9475 2052.8
A 11 29 422915 201.4 9639 9475 2052.8
B 3 112 1964855 1084.67 9656 9425 1802.8
B 7 220 900217 494.12 9656 9425 1802.8
B 3 64 630981 344.77 9656 9425 1802.8
C 9 221 5346483 2458.48 9280 9242 2170.9
C 3 233 4774399 2194.96 9280 9242 2170.9
C 0 207 223370 98.63 9280 9242 2170.9
D 1 52 18014808 8548.61 9157 8857 2106.3
D 7 238 12198759 5787.35 9157 8857 2106.3
D 5 222 6028086 2857.72 9157 8857 2106.3

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