ASTROSAT CZTI

Data Quality Report

Orbit 31958

Creation date: 2024-06-27T20:34:32.687171
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/AS1C06_002T04_9000004660_31958cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31958cztM0_level2_quad_clean.evt
Size (bytes)153,593,28011,571,840
Size146.5 MB 11.0 MB
Events in quadrant A754,15458,160
Events in quadrant B1,250,79459,163
Events in quadrant C1,476,28156,999
Events in quadrant D1,058,57056,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032500
B048390
C055540
D043330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161020.124224%
B161150.310366%
C161117610.924891%
D1611211.303538%

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 1610 1610 0 0 0.00% 0.00%
B 1611 1611 1 1 0.06% 0.06%
C 1611 1611 66 66 4.10% 4.10%
D 1611 1611 19 19 1.18% 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 14 238 3288 76.07 194 191 40.7
A 13 254 2818 64.52 194 191 40.7
A 3 137 1956 43.35 194 191 40.7
B 6 159 466949 12021.81 194 189 38.8
B 15 33 15168 385.8 194 189 38.8
B 10 247 5744 143.07 194 189 38.8
C 3 233 653077 14955.28 179 180 43.7
C 0 10 66535 1519.93 179 180 43.7
C 14 238 39976 911.57 179 180 43.7
D 8 195 285752 6159.28 184 178 46.4
D 12 218 53636 1152.98 184 178 46.4
D 12 250 7763 163.58 184 178 46.4

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