ASTROSAT CZTI

Data Quality Report

Orbit 20220102_A11_003T10_9000004838_level2

Creation date: 2022-01-05T10:21:22.533149
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/AS1A11_003T10_9000004838cztM0_level2_bc.evt modeM0/AS1A11_003T10_9000004838cztM0_level2_quad_clean.evt
Size (bytes)1,248,384,960347,693,760
Size1.2 GB 331.6 MB
Events in quadrant A8,956,6642,198,434
Events in quadrant B7,856,0502,225,947
Events in quadrant C8,328,8402,199,970
Events in quadrant D10,867,7092,093,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0655540
B0629380
C0609970
D0742140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05360
B05360
C05360
D05360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2636811684.429612%
B263687152.711620%
C263684641.759709%
D2636812864.877124%

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 33773 26370 212 212 0.63% 0.80%
B 33773 26367 33 33 0.10% 0.13%
C 33773 26368 91 91 0.27% 0.35%
D 33773 26367 78 78 0.23% 0.30%

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 15 169 3729820 12823.72 1322 1300 290.8
A 13 6 75155 254.01 1322 1300 290.8
A 13 254 43868 146.41 1322 1300 290.8
B 5 172 1282509 4813.43 1345 1317 266.2
B 5 255 520696 1951.3 1345 1317 266.2
B 4 251 335486 1255.47 1345 1317 266.2
C 15 214 1068386 3575.95 1315 1309 298.4
C 0 10 1030679 3449.59 1315 1309 298.4
C 0 207 522157 1745.45 1315 1309 298.4
D 12 235 1626970 5228.55 1301 1258 310.9
D 8 195 1405380 4515.88 1301 1258 310.9
D 2 250 967773 3108.46 1301 1258 310.9

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