ASTROSAT CZTI

Data Quality Report

Orbit 36881

Creation date: 2024-06-27T21:32:44.777856
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/AS1A11_075T01_9000005244_36881cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36881cztM0_level2_quad_clean.evt
Size (bytes)444,784,32052,476,480
Size424.2 MB 50.0 MB
Events in quadrant A2,801,147420,501
Events in quadrant B807,1307,551
Events in quadrant C2,999,297420,294
Events in quadrant D6,499,025368,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118293
B053682
C0121732
D0229712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5282290.549034%
B52825282100.000000%
C52821041.968951%
D5282109520.730784%

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 7105 5283 19 19 0.27% 0.36%
B 7104 5281 0 0 0.00% 0.00%
C 7105 5283 80 80 1.13% 1.51%
D 7104 5282 906 906 12.75% 17.15%

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 254449 2010.34 624 613 126.3
A 13 248 106236 836.52 624 613 126.3
A 13 6 12155 91.41 624 613 126.3
B 12 243 732193 171586.02 12 12 4.3
B 12 144 13742 3217.61 12 12 4.3
B 0 221 1551 360.66 12 12 4.3
C 15 214 225292 1595.84 610 616 140.8
C 0 10 209944 1486.83 610 616 140.8
C 14 254 104629 738.79 610 616 140.8
D 12 235 3791879 28043.78 548 534 135.2
D 12 233 161046 1187.27 548 534 135.2
D 13 249 158832 1170.9 548 534 135.2

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