ASTROSAT CZTI

Data Quality Report

Orbit 36786

Creation date: 2024-06-27T21:31:39.304196
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/AS1A11_083T01_9000005242_36786cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36786cztM0_level2_quad_clean.evt
Size (bytes)688,536,00075,723,840
Size656.6 MB 72.2 MB
Events in quadrant A3,106,861549,169
Events in quadrant B10,428,838292,999
Events in quadrant C3,009,214543,644
Events in quadrant D3,928,500514,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127003
B0347132
C0122362
D0154082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5602871.553017%
B5602334959.782221%
C5602360.642628%
D5602871.553017%

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 7156 5603 46 46 0.64% 0.82%
B 7156 5602 3239 3239 45.26% 57.82%
C 7156 5603 34 34 0.48% 0.61%
D 7156 5603 86 86 1.20% 1.53%

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 15 223 357217 2720.94 645 631 131.1
A 10 83 226480 1723.35 645 631 131.1
A 13 6 12339 89.34 645 631 131.1
B 12 1 8448780 109856.15 390 381 76.9
B 4 171 286243 3717.12 390 381 76.9
B 4 80 26169 335.33 390 381 76.9
C 15 214 258242 1758.36 624 628 146.5
C 0 207 231673 1577.01 624 628 146.5
C 0 10 51553 347.59 624 628 146.5
D 12 235 955548 6181.69 624 606 154.5
D 13 249 143405 924.39 624 606 154.5
D 2 250 122318 787.89 624 606 154.5

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