ASTROSAT CZTI

Data Quality Report

Orbit 39561

Creation date: 2024-06-27T22:06:09.429891
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_018T01_9000005488_39561cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39561cztM0_level2_quad_clean.evt
Size (bytes)442,860,48092,989,440
Size422.3 MB 88.7 MB
Events in quadrant A5,196,666623,276
Events in quadrant B2,418,977660,211
Events in quadrant C3,445,782624,138
Events in quadrant D4,931,724546,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191243
B0106552
C0136202
D0182352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51602965.736434%
B5160170.329457%
C51601112.151163%
D51604809.302326%

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 7132 5161 282 282 3.95% 5.46%
B 7132 5161 8 8 0.11% 0.16%
C 7132 5161 98 98 1.37% 1.90%
D 7132 5161 432 432 6.06% 8.37%

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 15 222 2459538 20896.72 582 571 117.7
A 10 83 441428 3746.48 582 571 117.7
A 9 143 14774 120.7 582 571 117.7
B 5 255 45783 401.51 591 574 112.6
B 5 172 32542 283.91 591 574 112.6
B 0 230 15254 130.38 591 574 112.6
C 9 187 525624 3892.4 582 586 134.9
C 15 208 382548 2831.7 582 586 134.9
C 15 214 216152 1598.11 582 586 134.9
D 12 227 1726025 12589.65 564 550 137.1
D 1 52 507324 3697.59 564 550 137.1
D 12 0 161268 1172.65 564 550 137.1

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