ASTROSAT CZTI

Data Quality Report

Orbit 43796

Creation date: 2024-06-27T22:55:52.894103
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/AS1A13_018T01_9000005906_43796cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43796cztM0_level2_quad_clean.evt
Size (bytes)626,955,840117,961,920
Size597.9 MB 112.5 MB
Events in quadrant A5,116,507810,565
Events in quadrant B4,368,267838,586
Events in quadrant C4,457,233817,162
Events in quadrant D8,687,960587,206

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205221
B0178611
C0181231
D0309511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74473054.095609%
B74482823.786251%
C74482373.182062%
D7448191925.765306%

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 7792 7448 67 67 0.86% 0.90%
B 7793 7449 57 57 0.73% 0.77%
C 7793 7449 102 102 1.31% 1.37%
D 7793 7449 1699 1699 21.80% 22.81%

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 1046384 5687.55 886 868 183.8
A 15 223 462331 2510.33 886 868 183.8
A 13 248 110880 598.46 886 868 183.8
B 0 200 235206 1341.38 879 852 174.7
B 5 235 216832 1236.22 879 852 174.7
B 4 171 81548 461.88 879 852 174.7
C 3 233 331370 1630.24 857 863 202.7
C 15 158 278987 1371.86 857 863 202.7
C 15 174 236209 1160.85 857 863 202.7
D 12 33 3521238 17503.97 771 746 201.1
D 5 235 613318 3045.72 771 746 201.1
D 1 52 456866 2267.84 771 746 201.1

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