ASTROSAT CZTI

Data Quality Report

Orbit 24561

Creation date: 2024-06-27T19:07:17.306900
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/AS1T03_183T01_9000003610_24561cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24561cztM0_level2_quad_clean.evt
Size (bytes)505,739,520106,571,520
Size482.3 MB 101.6 MB
Events in quadrant A2,800,553739,918
Events in quadrant B2,877,605740,472
Events in quadrant C2,833,952704,985
Events in quadrant D6,426,074651,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120581
B0122231
C0121411
D0229711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5585661.181737%
B5585751.342883%
C55851262.256043%
D558560410.814682%

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 6765 5585 0 0 0.00% 0.00%
B 6765 5585 1 1 0.01% 0.02%
C 6765 5585 6 6 0.09% 0.11%
D 6765 5585 496 496 7.33% 8.88%

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 9212 59.23 726 714 143.5
A 0 226 6278 38.78 726 714 143.5
A 3 137 6010 36.91 726 714 143.5
B 0 190 50125 368.25 714 699 134.2
B 12 111 15324 108.96 714 699 134.2
B 11 111 13830 97.83 714 699 134.2
C 14 238 112611 723.43 678 684 154.7
C 2 16 59156 377.93 678 684 154.7
C 3 233 8049 47.6 678 684 154.7
D 8 195 3038387 18701.56 674 655 162.4
D 12 218 548391 3372.09 674 655 162.4
D 1 52 203234 1247.16 674 655 162.4

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