ASTROSAT CZTI

Data Quality Report

Orbit 21484

Creation date: 2024-06-27T18:28:28.055686
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_141T01_9000003174_21484cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21484cztM0_level2_quad_clean.evt
Size (bytes)505,036,800106,104,960
Size481.6 MB 101.2 MB
Events in quadrant A3,487,152683,342
Events in quadrant B3,670,612696,205
Events in quadrant C3,560,825672,612
Events in quadrant D4,079,991652,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150770
B0153690
C0153480
D0169820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7318540.737907%
B7319741.011067%
C7319851.161361%
D73191231.680557%

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 7663 7318 0 0 0.00% 0.00%
B 7664 7319 3 3 0.04% 0.04%
C 7664 7320 0 0 0.00% 0.00%
D 7664 7320 88 88 1.15% 1.20%

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 12201 62.35 904 884 181.5
A 0 226 7618 37.1 904 884 181.5
A 3 137 7483 36.36 904 884 181.5
B 0 230 75167 431.42 901 878 172.2
B 0 190 22643 126.4 901 878 172.2
B 12 111 20533 114.14 901 878 172.2
C 14 238 136705 672.43 861 866 202.0
C 0 239 60422 294.81 861 866 202.0
C 3 233 7336 32.03 861 866 202.0
D 7 38 493930 2331.69 875 850 211.5
D 13 153 72699 339.76 875 850 211.5
D 1 52 69751 325.82 875 850 211.5

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