ASTROSAT CZTI

Data Quality Report

Orbit 39505

Creation date: 2024-06-27T22:05:27.308866
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_39505cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39505cztM0_level2_quad_clean.evt
Size (bytes)307,402,56085,815,360
Size293.2 MB 81.8 MB
Events in quadrant A2,650,138582,210
Events in quadrant B2,952,077572,526
Events in quadrant C2,605,823581,413
Events in quadrant D2,796,636525,622

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109073
B0120612
C0106852
D0117422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4799200.416753%
B47993266.793082%
C4799531.104397%
D47991142.375495%

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 6952 4800 12 12 0.17% 0.25%
B 6952 4800 288 288 4.14% 6.00%
C 6952 4800 49 49 0.70% 1.02%
D 6952 4800 99 99 1.42% 2.06%

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 395735 3690.41 532 524 107.1
A 2 79 61813 572.31 532 524 107.1
A 9 143 58000 536.7 532 524 107.1
B 5 172 884492 8955.42 524 510 98.7
B 12 111 12285 119.29 524 510 98.7
B 11 111 11260 108.91 524 510 98.7
C 9 187 319775 2623.82 527 531 121.7
C 15 214 202673 1661.38 527 531 121.7
C 3 233 13187 104.02 527 531 121.7
D 2 249 246756 1977.03 517 502 124.6
D 13 249 243154 1948.11 517 502 124.6
D 12 227 217047 1738.51 517 502 124.6

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