ASTROSAT CZTI

Data Quality Report

Orbit 21857

Creation date: 2024-06-27T18:33:06.995657
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_118T01_9000003232_21857cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21857cztM0_level2_quad_clean.evt
Size (bytes)336,700,80051,353,280
Size321.1 MB 49.0 MB
Events in quadrant A2,256,665317,020
Events in quadrant B2,370,462329,248
Events in quadrant C2,263,720313,252
Events in quadrant D3,007,335286,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094001
B096871
C093821
D0118301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4383771.756788%
B4383952.167465%
C4383962.190281%
D43832235.087839%

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 5693 4384 2 2 0.04% 0.05%
B 5693 4384 8 8 0.14% 0.18%
C 5693 4383 0 0 0.00% 0.00%
D 5693 4384 177 177 3.11% 4.04%

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 4 2 27639 231.07 575 563 117.2
A 13 254 8379 66.7 575 563 117.2
A 14 235 6584 51.38 575 563 117.2
B 3 64 73494 650.66 580 567 112.1
B 12 111 12707 108.31 580 567 112.1
B 0 190 11144 94.37 580 567 112.1
C 14 238 88990 681.46 552 557 129.8
C 0 10 16434 122.35 552 557 129.8
C 10 23 4155 27.73 552 557 129.8
D 1 52 582210 4392.57 542 526 132.4
D 13 104 183922 1384.91 542 526 132.4
D 7 238 125421 943.14 542 526 132.4

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