ASTROSAT CZTI

Data Quality Report

Orbit 36135

Creation date: 2022-08-10T18:54:56.147223
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/AS1T04_069T01_9000005158_36135cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36135cztM0_level2_quad_clean.evt
Size (bytes)515,220,48079,790,400
Size491.4 MB 76.1 MB
Events in quadrant A2,961,976521,354
Events in quadrant B4,228,558493,835
Events in quadrant C3,208,523508,477
Events in quadrant D4,793,809469,458

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125893
B0165602
C0131492
D0182912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6056200.330251%
B60564587.562748%
C6056741.221929%
D60564337.149934%

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 9161 6058 10 10 0.11% 0.17%
B 9161 6058 343 343 3.74% 5.66%
C 9161 6058 52 52 0.57% 0.86%
D 9161 6058 352 352 3.84% 5.81%

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 188087 1329.74 695 679 140.9
A 9 143 67420 473.56 695 679 140.9
A 8 144 13877 93.64 695 679 140.9
B 5 172 1486274 11403.54 669 650 130.3
B 0 213 49487 374.87 669 650 130.3
B 5 255 43853 331.62 669 650 130.3
C 15 214 258755 1652.88 668 674 156.1
C 0 10 192919 1231.23 668 674 156.1
C 0 207 124322 791.9 668 674 156.1
D 12 17 1019898 6265.54 656 637 162.7
D 1 52 601792 3695.38 656 637 162.7
D 12 6 162855 997.18 656 637 162.7

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