ASTROSAT CZTI

Data Quality Report

Orbit 18622

Creation date: 2024-06-27T17:52:33.680379
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_104T07_9000002780_18622cztM0_level2.evt modeM0/AS1A05_104T07_9000002780_18622cztM0_level2_quad_clean.evt
Size (bytes)1,134,253,440154,690,560
Size1.1 GB 147.5 MB
Events in quadrant A6,939,957953,485
Events in quadrant B6,335,768986,615
Events in quadrant C6,088,859961,323
Events in quadrant D14,113,786890,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290673
B0270593
C0264363
D0506703

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129194483.467761%
B129192221.718399%
C129191701.315891%
D12919246719.095905%

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 14189 12920 239 239 1.68% 1.85%
B 14189 12920 32 32 0.23% 0.25%
C 14189 12920 0 0 0.00% 0.00%
D 14189 12920 2139 2139 15.08% 16.56%

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 14 111 1010251 3251.78 1522 1487 310.2
A 9 143 46619 145.48 1522 1487 310.2
A 13 254 19668 58.61 1522 1487 310.2
B 4 80 235174 798.2 1531 1489 292.8
B 0 230 56638 188.37 1531 1489 292.8
B 12 111 37285 122.27 1531 1489 292.8
C 14 238 228784 660.2 1478 1487 344.3
C 9 221 53098 149.91 1478 1487 344.3
C 3 233 35349 98.36 1478 1487 344.3
D 1 52 8551060 25308.12 1390 1351 337.8
D 7 238 173337 509.1 1390 1351 337.8
D 14 34 77524 225.48 1390 1351 337.8

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