ASTROSAT CZTI

Data Quality Report

Orbit 40490

Creation date: 2024-06-27T22:16:44.781000
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_022T01_9000005540_40490cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40490cztM0_level2_quad_clean.evt
Size (bytes)329,247,36092,056,320
Size314.0 MB 87.8 MB
Events in quadrant A2,921,525650,717
Events in quadrant B2,589,242666,456
Events in quadrant C2,775,963618,916
Events in quadrant D3,490,075482,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117193
B0110032
C0113152
D0138202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5262100.190042%
B5262140.266059%
C526270.133029%
D526298318.681110%

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 7386 5264 2 2 0.03% 0.04%
B 7386 5264 8 8 0.11% 0.15%
C 7386 5264 5 5 0.07% 0.09%
D 7386 5264 262 262 3.55% 4.98%

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 480068 3890.64 612 602 123.2
A 12 189 29199 232.05 612 602 123.2
A 13 28 15592 121.64 612 602 123.2
B 4 170 110800 961.58 603 587 114.6
B 15 35 45096 388.33 603 587 114.6
B 5 255 37349 320.74 603 587 114.6
C 15 214 231977 1709.23 586 591 135.4
C 9 187 214750 1581.98 586 591 135.4
C 14 254 33322 241.78 586 591 135.4
D 2 250 762517 5831.28 538 525 130.7
D 12 128 204437 1560.47 538 525 130.7
D 12 191 182848 1395.26 538 525 130.7

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