ASTROSAT CZTI

Data Quality Report

Orbit 41257

Creation date: 2024-06-27T22:26:37.245788
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_052T04_9000005638_41257cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41257cztM0_level2_quad_clean.evt
Size (bytes)386,634,24088,064,640
Size368.7 MB 84.0 MB
Events in quadrant A2,752,731611,059
Events in quadrant B2,768,557621,478
Events in quadrant C3,977,595582,740
Events in quadrant D4,425,057501,448

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110623
B0115362
C0150432
D0164742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4989110.220485%
B4989651.302866%
C49892875.752656%
D498963912.808178%

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 7083 4990 2 2 0.03% 0.04%
B 7083 4990 40 40 0.56% 0.80%
C 7083 4990 273 273 3.85% 5.47%
D 7083 4990 583 583 8.23% 11.68%

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 497008 4220.86 579 568 117.6
A 13 6 13665 111.35 579 568 117.6
A 13 254 8271 65.49 579 568 117.6
B 0 186 461906 4292.96 570 555 107.5
B 5 255 27980 255.19 570 555 107.5
B 0 245 16239 145.94 570 555 107.5
C 9 54 1266685 9773.75 561 565 129.5
C 0 10 296183 2282.01 561 565 129.5
C 15 214 216697 1668.42 561 565 129.5
D 1 52 1252388 9620.43 535 521 130.1
D 13 249 724298 5562.13 535 521 130.1
D 5 222 165381 1266.93 535 521 130.1

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