ASTROSAT CZTI

Data Quality Report

Orbit 20230511_A12_101T02_9000005622_level2

Creation date: 2023-05-15T14:34:11.454470
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_101T02_9000005622cztM0_level2.fits modeM0/AS1A12_101T02_9000005622cztM0_level2_quad_clean.evt
Size (bytes)312,039,360338,659,200
Size297.6 MB 323.0 MB
Events in quadrant A1,900,1302,119,623
Events in quadrant B1,796,0062,061,834
Events in quadrant C1,799,9161,953,992
Events in quadrant D1,590,1521,757,761

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740920
B0792280
C0804480
D0845570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07040
B07040
C07040
D07040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34397490.142454%
B343979092.642672%
C3439712503.634038%
D3439710863.157252%

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 49400 34397 0 0 0.00% 0.00%
B 49400 34375 0 0 0.00% 0.00%
C 49400 34323 0 0 0.00% 0.00%
D 49400 34361 0 0 0.00% 0.00%

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 7 110 1657 9.56 496 468 124.4
A 9 19 1538 8.6 496 468 124.4
A 0 29 1490 8.22 496 468 124.4
B 2 9 1592 12.1 474 454 94.1
B 3 80 1267 8.64 474 454 94.1
B 2 8 1264 8.61 474 454 94.1
C 3 203 1443 8.26 474 445 120.8
C 1 81 1439 8.23 474 445 120.8
C 3 202 1407 7.96 474 445 120.8
D 10 189 1241 6.73 455 416 122.6
D 4 160 1187 6.29 455 416 122.6
D 7 3 1176 6.2 455 416 122.6

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