ASTROSAT CZTI

Data Quality Report

Orbit 26227

Creation date: 2024-06-27T19:26:19.424331
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_019T04_9000003788_26227cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26227cztM0_level2_quad_clean.evt
Size (bytes)412,755,840101,422,080
Size393.6 MB 96.7 MB
Events in quadrant A2,676,962694,748
Events in quadrant B2,430,614722,890
Events in quadrant C2,441,299685,688
Events in quadrant D4,612,778618,856

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112270
B0103700
C0104440
D0172210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4980781.566265%
B4980430.863454%
C4980601.204819%
D498061512.349398%

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 4980 4980 45 45 0.90% 0.90%
B 4980 4980 1 1 0.02% 0.02%
C 4980 4980 0 0 0.00% 0.00%
D 4980 4980 552 552 11.08% 11.08%

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 0 13 316207 2587.13 612 601 122.0
A 13 254 8071 61.23 612 601 122.0
A 0 226 5339 38.84 612 601 122.0
B 12 111 13338 109.46 617 600 116.4
B 11 111 12011 98.06 617 600 116.4
B 0 190 10905 88.56 617 600 116.4
C 14 238 97152 704.23 591 595 137.1
C 3 233 11730 81.21 591 595 137.1
C 8 128 9507 65.0 591 595 137.1
D 1 52 2294433 17256.57 558 545 132.9
D 13 174 109117 816.77 558 545 132.9
D 12 233 72531 541.54 558 545 132.9

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