ASTROSAT CZTI

Data Quality Report

Orbit 22771

Creation date: 2024-06-27T18:45:29.414056
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/AS1C05_001T01_9000003366_22771cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22771cztM0_level2_quad_clean.evt
Size (bytes)253,212,48067,475,520
Size241.5 MB 64.3 MB
Events in quadrant A1,642,036466,695
Events in quadrant B1,571,250467,625
Events in quadrant C1,489,327443,785
Events in quadrant D2,738,276429,003

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067830
B067950
C066900
D0103720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332110.030111%
B332220.060205%
C332280.240819%
D33221574.726069%

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 3321 3321 0 0 0.00% 0.00%
B 3321 3321 0 0 0.00% 0.00%
C 3322 3322 0 0 0.00% 0.00%
D 3321 3321 171 171 5.15% 5.15%

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 17 115416 1434.95 394 388 80.2
A 13 254 5986 69.83 394 388 80.2
A 11 47 4603 52.58 394 388 80.2
B 0 190 16898 223.32 390 382 74.0
B 0 228 13337 175.17 390 382 74.0
B 0 230 12433 162.95 390 382 74.0
C 14 238 59659 695.42 366 369 85.3
C 13 61 2569 25.8 366 369 85.3
C 10 22 931 6.59 366 369 85.3
D 1 52 692005 7626.01 369 359 90.7
D 12 33 294540 3243.61 369 359 90.7
D 12 233 150033 1650.29 369 359 90.7

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