ASTROSAT CZTI

Data Quality Report

Orbit 20230717_A12_088T24_9000005768_level2

Creation date: 2023-07-19T15:25:01.767787
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_088T24_9000005768cztM0_level2.fits modeM0/AS1A12_088T24_9000005768cztM0_level2_quad_clean.evt
Size (bytes)211,357,440182,989,440
Size201.6 MB 174.5 MB
Events in quadrant A1,241,738959,692
Events in quadrant B1,230,6521,062,423
Events in quadrant C1,245,4801,004,861
Events in quadrant D1,057,444888,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0628600
B0491360
C0485120
D0588940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2361310644.505992%
B23613620.262567%
C23613730.309152%
D236137553.197391%

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 33567 23607 0 0 0.00% 0.00%
B 33567 23613 0 0 0.00% 0.00%
C 33567 23613 0 0 0.00% 0.00%
D 33567 23546 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 1038 8.88 323 303 82.8
A 0 29 1030 8.78 323 303 82.8
A 9 19 970 8.06 323 303 82.8
B 2 9 1043 11.16 325 310 65.7
B 3 80 922 9.32 325 310 65.7
B 5 128 921 9.31 325 310 65.7
C 1 81 1009 8.12 329 308 86.3
C 1 80 953 7.47 329 308 86.3
C 3 203 945 7.38 329 308 86.3
D 4 160 792 6.22 302 275 83.1
D 10 113 790 6.2 302 275 83.1
D 7 3 782 6.1 302 275 83.1

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