ASTROSAT CZTI

Data Quality Report

Orbit 34613

Creation date: 2022-02-21T20:22:46.711579
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_046T09_9000004952_34613cztM0_level2.evt modeM0/AS1A11_046T09_9000004952_34613cztM0_level2_quad_clean.evt
Size (bytes)524,701,44059,993,280
Size500.4 MB 57.2 MB
Events in quadrant A2,475,196386,173
Events in quadrant B3,511,579363,935
Events in quadrant C2,885,756381,772
Events in quadrant D6,665,770319,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106363
B0135922
C0113742
D0233442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519870.134667%
B51983526.771835%
C5198761.462101%
D5198121323.335898%

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 7141 5199 1 1 0.01% 0.02%
B 7141 5199 246 246 3.44% 4.73%
C 7141 5199 43 43 0.60% 0.83%
D 7141 5199 1091 1091 15.28% 20.98%

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 45176 357.86 625 613 124.5
A 13 254 9370 70.32 625 613 124.5
A 3 137 6081 43.91 625 613 124.5
B 5 172 699124 6107.96 604 590 114.4
B 5 200 303354 2647.36 604 590 114.4
B 10 245 38474 331.26 604 590 114.4
C 15 214 216203 1536.72 603 608 140.3
C 0 10 198041 1407.26 603 608 140.3
C 14 67 106972 758.14 603 608 140.3
D 7 223 1890738 13624.69 563 547 138.7
D 2 249 1253445 9031.02 563 547 138.7
D 8 195 943271 6795.25 563 547 138.7

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