ASTROSAT CZTI

Data Quality Report

Orbit 34334

Creation date: 2022-02-02T23:24:20.870475
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_001T05_9000004902_34334cztM0_level2.evt modeM0/AS1C07_001T05_9000004902_34334cztM0_level2_quad_clean.evt
Size (bytes)489,536,64092,983,680
Size466.9 MB 88.7 MB
Events in quadrant A2,619,295625,322
Events in quadrant B3,606,168614,361
Events in quadrant C3,027,524631,467
Events in quadrant D5,220,885580,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110943
B0142272
C0122352
D0191742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519350.096283%
B51932665.122280%
C5193821.579049%
D51933476.682072%

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 7165 5194 1 1 0.01% 0.02%
B 7165 5194 187 187 2.61% 3.60%
C 7165 5194 45 45 0.63% 0.87%
D 7165 5194 298 298 4.16% 5.74%

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 31958 241.1 658 646 129.9
A 9 143 24587 184.34 658 646 129.9
A 13 6 12234 89.23 658 646 129.9
B 5 200 428349 3577.69 646 630 119.6
B 5 172 349122 2914.99 646 630 119.6
B 0 229 73346 608.24 646 630 119.6
C 15 214 217479 1466.21 651 657 147.9
C 0 10 156448 1053.5 651 657 147.9
C 14 254 72023 482.6 651 657 147.9
D 12 235 1289523 8340.51 639 624 154.5
D 8 195 886668 5733.62 639 624 154.5
D 1 52 165660 1067.95 639 624 154.5

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