ASTROSAT CZTI

Data Quality Report

Orbit 40447

Creation date: 2024-06-27T22:16:13.139405
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_022T01_9000005540_40447cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40447cztM0_level2_quad_clean.evt
Size (bytes)810,308,160240,295,680
Size772.8 MB 229.2 MB
Events in quadrant A7,149,9501,677,867
Events in quadrant B6,347,2161,713,886
Events in quadrant C6,796,5181,593,453
Events in quadrant D8,668,0551,371,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290124
B0270743
C0279653
D0344603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13321200.150139%
B13321340.255236%
C13321550.412882%
D1332112289.218527%

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 19570 13324 4 4 0.02% 0.03%
B 19570 13324 16 16 0.08% 0.12%
C 19570 13324 37 37 0.19% 0.28%
D 19570 13324 116 116 0.59% 0.87%

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 1028141 3307.46 1558 1534 310.4
A 3 1 30860 94.48 1558 1534 310.4
A 0 8 26258 79.65 1558 1534 310.4
B 3 112 139998 478.54 1543 1500 289.4
B 4 171 78655 266.59 1543 1500 289.4
B 12 111 35420 117.2 1543 1500 289.4
C 15 214 568591 1658.45 1510 1522 341.9
C 14 254 316441 921.01 1510 1522 341.9
C 0 10 15691 41.44 1510 1522 341.9
D 12 227 1177309 3352.43 1449 1412 350.8
D 12 191 397608 1129.54 1449 1412 350.8
D 8 230 361301 1026.03 1449 1412 350.8

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