ASTROSAT CZTI

Data Quality Report

Orbit 20230614_A12_035T02_9000005690_level2

Creation date: 2023-06-16T10:28:47.536957
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_035T02_9000005690cztM0_level2.fits modeM0/AS1A12_035T02_9000005690cztM0_level2_quad_clean.evt
Size (bytes)350,208,000407,724,480
Size334.0 MB 388.8 MB
Events in quadrant A2,129,3102,577,890
Events in quadrant B2,037,0722,577,060
Events in quadrant C2,053,6262,431,628
Events in quadrant D1,740,9902,117,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0854110
B0816780
C0817280
D01106980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07840
B07840
C07840
D07840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A385131400.363514%
B385122620.680307%
C385115811.508660%
D3850825236.551885%

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 52768 38513 0 0 0.00% 0.00%
B 52768 38514 0 0 0.00% 0.00%
C 52768 38491 0 0 0.00% 0.00%
D 52767 38485 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 1741 8.6 556 522 141.8
A 9 19 1724 8.48 556 522 141.8
A 0 29 1713 8.4 556 522 141.8
B 2 9 1802 12.01 539 514 107.2
B 3 80 1435 8.59 539 514 107.2
B 3 17 1428 8.52 539 514 107.2
C 1 81 1744 8.9 541 506 139.1
C 1 80 1663 8.32 541 506 139.1
C 3 202 1617 7.98 541 506 139.1
D 4 160 1285 6.17 498 454 134.7
D 6 83 1269 6.05 498 454 134.7
D 10 189 1261 5.99 498 454 134.7

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