ASTROSAT CZTI

Data Quality Report

Orbit 20220702_C07_006T01_9000005218_level2

Creation date: 2022-07-04T15:05:19.948700
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C07_006T01_9000005218cztM0_level2_bc.evt modeM0/AS1C07_006T01_9000005218cztM0_level2_quad_clean.evt
Size (bytes)234,740,16060,511,680
Size223.9 MB 57.7 MB
Events in quadrant A1,222,280381,192
Events in quadrant B1,421,302377,998
Events in quadrant C1,530,847368,417
Events in quadrant D2,586,394353,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105950
B0115190
C0115580
D0160450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5011260.518859%
B5011440.878068%
C50111262.514468%
D50111362.714029%

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 6985 5012 4 4 0.06% 0.08%
B 6985 5011 4 4 0.06% 0.08%
C 6985 5011 13 13 0.19% 0.26%
D 6985 5011 24 24 0.34% 0.48%

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 10 83 145666 2497.29 250 246 58.2
A 15 223 85764 1468.6 250 246 58.2
A 9 143 13745 231.82 250 246 58.2
B 5 255 113510 2172.39 249 244 52.1
B 0 213 85722 1639.43 249 244 52.1
B 0 219 68069 1300.85 249 244 52.1
C 0 10 319380 5454.93 243 241 58.5
C 15 214 198232 3384.19 243 241 58.5
C 14 254 37105 630.1 243 241 58.5
D 12 235 1062934 17332.17 245 237 61.3
D 13 249 160584 2615.2 245 237 61.3
D 2 250 70388 1144.14 245 237 61.3

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