ASTROSAT CZTI

Data Quality Report

Orbit 12120

Creation date: 2024-06-27T16:22:41.471841
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/AS1G08_065T01_9000001796_12120cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12120cztM0_level2_quad_clean.evt
Size (bytes)655,283,520122,932,800
Size624.9 MB 117.2 MB
Events in quadrant A4,445,504798,605
Events in quadrant B5,781,895784,174
Events in quadrant C3,975,887792,528
Events in quadrant D5,067,713758,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191413
B0229822
C0178782
D0207532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84822322.735204%
B84824965.847677%
C8482810.954963%
D84821732.039613%

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 8758 8485 52 52 0.59% 0.61%
B 8758 8485 136 136 1.55% 1.60%
C 8758 8485 5 5 0.06% 0.06%
D 8758 8485 100 100 1.14% 1.18%

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 1 162 165017 783.1 1028 1005 209.4
A 5 16 117850 557.9 1028 1005 209.4
A 1 178 59238 278.04 1028 1005 209.4
B 4 239 1250578 6333.61 1027 999 197.3
B 15 204 200872 1013.08 1027 999 197.3
B 0 85 126088 634.03 1027 999 197.3
C 14 234 19075 76.93 1010 1014 234.8
C 8 128 9589 36.52 1010 1014 234.8
C 13 61 7384 27.13 1010 1014 234.8
D 8 195 559295 2293.22 999 968 243.5
D 14 34 279726 1144.94 999 968 243.5
D 1 52 99184 403.4 999 968 243.5

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