ASTROSAT CZTI

Data Quality Report

Orbit 16248

Creation date: 2024-06-27T17:19:55.234944
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/AS1T02_112T01_9000002390_16248cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16248cztM0_level2_quad_clean.evt
Size (bytes)965,727,360165,833,280
Size921.0 MB 158.2 MB
Events in quadrant A7,504,6821,039,623
Events in quadrant B7,321,9211,044,917
Events in quadrant C6,304,4401,039,379
Events in quadrant D7,244,7501,008,196

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309914
B0302713
C0269593
D0302133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128875123.972996%
B128872842.203771%
C12887830.644060%
D128872882.234810%

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 14703 12891 350 350 2.38% 2.72%
B 14703 12891 134 134 0.91% 1.04%
C 14703 12891 3 3 0.02% 0.02%
D 14703 12891 243 243 1.65% 1.89%

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 15 174 1576653 5169.45 1512 1483 304.7
A 9 143 53839 171.82 1512 1483 304.7
A 13 248 51362 163.69 1512 1483 304.7
B 7 220 325366 1112.94 1529 1489 291.0
B 3 64 304837 1042.4 1529 1489 291.0
B 10 16 262375 896.48 1529 1489 291.0
C 3 233 256389 740.25 1470 1481 344.4
C 14 238 226098 652.29 1470 1481 344.4
C 0 207 84748 241.81 1470 1481 344.4
D 1 52 1344391 3730.17 1476 1434 360.0
D 13 112 133620 367.16 1476 1434 360.0
D 10 70 115488 316.79 1476 1434 360.0

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