ASTROSAT CZTI

Data Quality Report

Orbit 18661

Creation date: 2024-06-27T17:53:05.820256
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/AS1A06_005T01_9000002788_18661cztM0_level2.evt modeM0/AS1A06_005T01_9000002788_18661cztM0_level2_quad_clean.evt
Size (bytes)487,298,88053,809,920
Size464.7 MB 51.3 MB
Events in quadrant A2,635,800351,014
Events in quadrant B2,283,109359,064
Events in quadrant C2,392,537343,585
Events in quadrant D7,128,277245,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110801
B097501
C0100111
D0244321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4684370.789923%
B4683430.918215%
C4683761.622891%
D4683179838.394192%

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 5184 4685 1 1 0.02% 0.02%
B 5183 4684 0 0 0.00% 0.00%
C 5183 4684 7 7 0.14% 0.15%
D 5183 4684 1619 1619 31.24% 34.56%

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 15 192 383402 3306.8 574 562 115.8
A 0 13 29894 253.36 574 562 115.8
A 13 254 7529 60.18 574 562 115.8
B 12 111 13555 116.59 575 560 111.5
B 11 111 11577 98.85 575 560 111.5
B 14 111 10168 86.2 575 560 111.5
C 9 221 117639 895.8 552 556 130.7
C 14 238 86251 655.65 552 556 130.7
C 9 54 23631 176.55 552 556 130.7
D 7 238 5022019 43980.34 468 453 114.2
D 1 52 266856 2333.24 468 453 114.2
D 12 225 32696 282.39 468 453 114.2

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