ASTROSAT CZTI

Data Quality Report

Orbit 40797

Creation date: 2024-06-27T22:20:37.721254
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_095T02_9000005568_40797cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40797cztM0_level2_quad_clean.evt
Size (bytes)269,112,96073,673,280
Size256.6 MB 70.3 MB
Events in quadrant A2,554,568490,703
Events in quadrant B2,117,554507,342
Events in quadrant C2,103,156482,141
Events in quadrant D2,837,056435,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102801
B094911
C090841
D0115631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A447490.201162%
B4474110.245865%
C447490.201162%
D4474871.944569%

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 6477 4475 4 4 0.06% 0.09%
B 6477 4475 7 7 0.11% 0.16%
C 6477 4475 8 8 0.12% 0.18%
D 6477 4475 85 85 1.31% 1.90%

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 370101 3646.29 490 481 101.4
A 6 10 149311 1468.2 490 481 101.4
A 12 189 75698 742.01 490 481 101.4
B 15 54 65686 677.79 487 473 96.2
B 7 202 47507 488.84 487 473 96.2
B 15 85 36425 373.66 487 473 96.2
C 15 214 188860 1679.28 479 482 112.2
C 0 10 36282 319.14 479 482 112.2
C 3 233 8051 67.47 479 482 112.2
D 13 249 677107 5853.28 474 461 115.6
D 2 153 147785 1274.42 474 461 115.6
D 2 249 81188 698.32 474 461 115.6

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