ASTROSAT CZTI

Data Quality Report

Orbit 24760

Creation date: 2024-06-27T19:09:34.469543
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/AS1A07_147T01_9000003624_24760cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24760cztM0_level2_quad_clean.evt
Size (bytes)338,391,36057,038,400
Size322.7 MB 54.4 MB
Events in quadrant A2,257,063357,915
Events in quadrant B2,923,081350,999
Events in quadrant C2,442,626345,941
Events in quadrant D2,304,461341,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096741
B0117931
C0102381
D099791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4709180.382247%
B47091763.737524%
C4709561.189212%
D4709170.361011%

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 5504 4710 0 0 0.00% 0.00%
B 5504 4710 101 101 1.84% 2.14%
C 5504 4710 0 0 0.00% 0.00%
D 5504 4710 3 3 0.05% 0.06%

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 10 255 7669 59.35 582 568 119.6
A 13 254 6960 53.42 582 568 119.6
A 3 137 5533 41.5 582 568 119.6
B 3 64 612805 5491.97 569 553 111.5
B 0 189 34631 305.68 569 553 111.5
B 12 111 13807 118.89 569 553 111.5
C 7 247 172856 1302.24 555 558 132.3
C 14 238 86303 648.06 555 558 132.3
C 2 16 16077 117.29 555 558 132.3
D 8 195 104387 754.02 562 545 137.7
D 1 52 29274 208.61 562 545 137.7
D 12 233 22904 162.35 562 545 137.7

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