ASTROSAT CZTI

Data Quality Report

Orbit 19964

Creation date: 2024-06-27T18:09:19.588004
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/AS1A05_103T05_9000002974_19964cztM0_level2.evt modeM0/AS1A05_103T05_9000002974_19964cztM0_level2_quad_clean.evt
Size (bytes)567,138,240114,085,440
Size540.9 MB 108.8 MB
Events in quadrant A4,812,181718,531
Events in quadrant B3,817,264769,396
Events in quadrant C3,872,905732,812
Events in quadrant D4,162,213710,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194272
B0164732
C0162892
D0178702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75425537.332273%
B7542871.153540%
C7542831.100504%
D75432783.685536%

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 8782 7543 400 400 4.55% 5.30%
B 8782 7543 21 21 0.24% 0.28%
C 8782 7543 5 5 0.06% 0.07%
D 8783 7545 247 247 2.81% 3.27%

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 14 238 1439105 8315.5 860 842 173.0
A 14 254 42074 238.39 860 842 173.0
A 11 29 10690 56.94 860 842 173.0
B 7 220 165193 961.8 897 872 170.8
B 0 197 68075 393.35 897 872 170.8
B 12 111 20642 115.72 897 872 170.8
C 3 233 215302 1063.0 857 860 201.7
C 14 238 135367 666.76 857 860 201.7
C 9 221 94729 465.31 857 860 201.7
D 7 238 663910 3210.84 856 832 206.5
D 7 96 81344 389.87 856 832 206.5
D 12 1 56699 270.53 856 832 206.5

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