ASTROSAT CZTI

Data Quality Report

Orbit 06897

Creation date: 2024-06-27T15:12:48.420879
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/AS1A02_005T01_9000000948_06897cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06897cztM0_level2_quad_clean.evt
Size (bytes)892,517,760164,554,560
Size851.2 MB 156.9 MB
Events in quadrant A7,746,0581,024,771
Events in quadrant B6,059,8101,040,726
Events in quadrant C5,885,9951,033,141
Events in quadrant D6,463,930992,911

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323304
B0271103
C0268323
D0285023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129166465.001548%
B129161701.316197%
C12916870.673583%
D129161290.998761%

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 14226 12919 412 412 2.90% 3.19%
B 14226 12919 2 2 0.01% 0.02%
C 14226 12919 8 8 0.06% 0.06%
D 14226 12919 36 36 0.25% 0.28%

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 14 111 2018036 6779.12 1460 1425 297.5
A 13 248 51342 167.8 1460 1425 297.5
A 8 15 36739 118.71 1460 1425 297.5
B 0 219 99122 339.99 1504 1471 287.2
B 4 81 46815 157.87 1504 1471 287.2
B 12 111 29776 98.55 1504 1471 287.2
C 9 247 152090 446.23 1452 1458 337.6
C 10 22 17222 46.7 1452 1458 337.6
C 8 128 15377 41.23 1452 1458 337.6
D 2 216 424251 1188.24 1448 1401 355.9
D 5 81 234064 653.8 1448 1401 355.9
D 8 195 162088 451.54 1448 1401 355.9

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