ASTROSAT CZTI

Data Quality Report

Orbit 39809

Creation date: 2024-06-27T22:09:12.038027
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_022T01_9000005498_39809cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39809cztM0_level2_quad_clean.evt
Size (bytes)1,990,261,440368,686,080
Size1.9 GB 351.6 MB
Events in quadrant A13,414,8102,700,131
Events in quadrant B12,317,7402,736,958
Events in quadrant C33,404,4261,805,663
Events in quadrant D12,779,5222,354,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537527
B0514976
C01150486
D0536376

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227542901.274501%
B227543631.595324%
C22754693430.473763%
D227545402.373209%

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 32317 22758 196 196 0.61% 0.86%
B 32317 22758 226 226 0.70% 0.99%
C 32317 22758 6188 6188 19.15% 27.19%
D 32317 22758 414 414 1.28% 1.82%

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 1759021 3390.81 2584 2537 518.0
A 9 143 885830 1705.15 2584 2537 518.0
A 2 79 430735 826.62 2584 2537 518.0
B 4 171 857000 1787.93 2539 2471 477.9
B 5 172 546086 1137.41 2539 2471 477.9
B 5 255 424273 882.54 2539 2471 477.9
C 9 187 19476865 38727.3 2192 2207 502.9
C 15 208 4420379 8785.98 2192 2207 502.9
C 15 214 846956 1679.87 2192 2207 502.9
D 13 249 1335517 2191.78 2491 2417 608.2
D 2 249 732775 1200.8 2491 2417 608.2
D 12 227 648619 1062.43 2491 2417 608.2

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