ASTROSAT CZTI

Data Quality Report

Orbit 29426

Creation date: 2024-06-27T20:04:01.591359
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/AS1A10_102T05_9000004232_29426cztM0_level2.evt modeM0/AS1A10_102T05_9000004232_29426cztM0_level2_quad_clean.evt
Size (bytes)894,934,080100,523,520
Size853.5 MB 95.9 MB
Events in quadrant A3,355,085685,796
Events in quadrant B3,661,922710,821
Events in quadrant C12,368,583573,166
Events in quadrant D7,275,820616,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138442
B0148922
C0412668
D0260952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6557190.289767%
B6557881.342077%
C6556355654.240390%
D6556106816.290421%

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 7837 6558 0 0 0.00% 0.00%
B 7837 6558 27 27 0.34% 0.41%
C 7836 6557 2566 2566 32.75% 39.13%
D 7836 6557 873 873 11.14% 13.31%

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 13 254 11521 61.86 869 856 172.4
A 3 137 7817 40.37 869 856 172.4
A 0 226 7498 38.52 869 856 172.4
B 10 245 175967 1090.39 866 846 160.6
B 0 229 38080 231.84 866 846 160.6
B 15 33 22582 135.34 866 846 160.6
C 3 233 9446240 57507.78 716 723 164.2
C 14 238 113960 689.43 716 723 164.2
C 2 114 13441 77.43 716 723 164.2
D 1 52 3368279 18541.83 783 765 181.6
D 8 195 522500 2872.72 783 765 181.6
D 13 153 236153 1296.07 783 765 181.6

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