ASTROSAT CZTI

Data Quality Report

Orbit 38600

Creation date: 2024-06-27T21:53:56.704013
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/AS1A12_052T04_9000005388_38600cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38600cztM0_level2_quad_clean.evt
Size (bytes)406,313,28081,334,080
Size387.5 MB 77.6 MB
Events in quadrant A2,549,527556,199
Events in quadrant B3,321,953557,691
Events in quadrant C2,431,677535,655
Events in quadrant D6,354,445466,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106173
B0132112
C0103112
D0223272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4932220.446067%
B49321653.345499%
C4932230.466342%
D49324619.347121%

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 6274 4932 8 8 0.13% 0.16%
B 6274 4932 98 98 1.56% 1.99%
C 6274 4932 17 17 0.27% 0.34%
D 6274 4932 460 460 7.33% 9.33%

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 329329 2870.22 555 544 114.6
A 13 248 40422 348.13 555 544 114.6
A 13 6 19608 166.42 555 544 114.6
B 0 183 350411 3294.72 548 533 106.2
B 4 251 209130 1964.31 548 533 106.2
B 0 190 152505 1431.08 548 533 106.2
C 15 214 196913 1541.47 541 542 127.4
C 14 254 45057 349.43 541 542 127.4
C 15 159 33578 259.33 541 542 127.4
D 1 20 2350109 18143.62 522 507 129.5
D 1 47 658056 5077.59 522 507 129.5
D 12 235 630978 4868.5 522 507 129.5

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