ASTROSAT CZTI

Data Quality Report

Orbit 44155

Creation date: 2024-06-27T22:59:51.982993
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/AS1A13_080T06_9000005954_44155cztM0_level2.fits modeM0/AS1A13_080T06_9000005954_44155cztM0_level2_quad_clean.evt
Size (bytes)337,311,36066,257,280
Size321.7 MB 63.2 MB
Events in quadrant A3,748,089441,547
Events in quadrant B3,205,473444,058
Events in quadrant C1,974,681447,558
Events in quadrant D3,252,935396,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141461
B0122531
C085261
D0123851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39172536.459025%
B391740410.314016%
C3917300.765892%
D39171794.569824%

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 5167 3918 165 165 3.19% 4.21%
B 5167 3918 220 220 4.26% 5.62%
C 5167 3918 13 13 0.25% 0.33%
D 5167 3918 119 119 2.30% 3.04%

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 893759 9647.28 447 438 92.6
A 15 223 740482 7991.99 447 438 92.6
A 14 237 88308 948.94 447 438 92.6
B 5 255 445417 5226.2 439 427 85.1
B 5 172 228386 2677.27 439 427 85.1
B 5 235 191345 2242.24 439 427 85.1
C 14 254 86328 827.06 443 447 103.8
C 3 233 53623 512.1 443 447 103.8
C 15 208 50593 482.92 443 447 103.8
D 13 187 387526 3453.99 434 418 112.1
D 1 52 298368 2658.48 434 418 112.1
D 13 171 150643 1340.39 434 418 112.1

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