ASTROSAT CZTI

Data Quality Report

Orbit 35094

Creation date: 2022-03-31T11:31:58.805585
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/AS1T05_015T01_9000005026_35094cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35094cztM0_level2_quad_clean.evt
Size (bytes)632,188,80075,418,560
Size602.9 MB 71.9 MB
Events in quadrant A2,948,039480,098
Events in quadrant B3,338,545489,193
Events in quadrant C3,384,316484,260
Events in quadrant D9,052,951394,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129463
B0141752
C0139032
D0312792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6238220.352677%
B6238951.522924%
C6238620.993908%
D6238135121.657583%

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 8894 6240 12 12 0.13% 0.19%
B 8894 6240 44 44 0.49% 0.71%
C 8894 6240 43 43 0.48% 0.69%
D 8894 6239 1018 1018 11.45% 16.32%

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 85159 583.58 716 702 144.7
A 9 143 58306 398.03 716 702 144.7
A 13 6 16994 112.58 716 702 144.7
B 5 172 388368 2805.96 714 697 138.2
B 5 255 77407 555.23 714 697 138.2
B 4 232 23257 163.29 714 697 138.2
C 15 214 260569 1607.24 697 702 161.7
C 0 10 209281 1290.03 697 702 161.7
C 0 207 93851 576.11 697 702 161.7
D 8 195 3576213 23309.54 632 613 153.4
D 7 80 2180907 14213.46 632 613 153.4
D 13 249 493352 3212.19 632 613 153.4

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