ASTROSAT CZTI

Data Quality Report

Orbit 20201114_A10_002T05_9000004000_level2

Creation date: 2021-01-07T12:58:07.989192
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/AS1A10_002T05_9000004000cztM0_level2_bc.evt modeM0/AS1A10_002T05_9000004000cztM0_level2_quad_clean.evt
Size (bytes)3,659,837,7601,394,697,600
Size3.4 GB 1.3 GB
Events in quadrant A22,280,1209,200,666
Events in quadrant B28,069,1588,986,105
Events in quadrant C24,709,5008,828,706
Events in quadrant D29,225,9748,634,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019600
B019600
C019600
D019600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690
B01690
C01690
D01690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02055810
B02320510
C02168220
D02298670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9625211091.152184%
B9625239054.057059%
C9625220862.167228%
D9625219241.998920%

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 113082 96242 20 20 0.02% 0.02%
B 113082 96241 79 79 0.07% 0.08%
C 113082 96238 14 14 0.01% 0.01%
D 113082 96245 239 239 0.21% 0.25%

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 0 13 1112933 966.78 5330 5252 1145.7
A 6 16 430055 370.77 5330 5252 1145.7
A 13 254 158411 133.68 5330 5252 1145.7
B 3 64 3992989 4107.72 5231 5122 970.8
B 10 245 2856606 2937.18 5231 5122 970.8
B 0 190 378679 384.78 5231 5122 970.8
C 3 233 4645503 3826.62 5104 5080 1212.7
C 10 22 210843 169.68 5104 5080 1212.7
C 15 208 131774 104.48 5104 5080 1212.7
D 1 52 6794108 5713.05 5220 5074 1188.3
D 2 250 1015249 850.07 5220 5074 1188.3
D 13 104 426164 354.35 5220 5074 1188.3

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