ASTROSAT CZTI

Data Quality Report

Orbit 12459

Creation date: 2024-06-27T16:27:40.188168
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/AS1A04_174T01_9000001850_12459cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12459cztM0_level2_quad_clean.evt
Size (bytes)647,712,00085,155,840
Size617.7 MB 81.2 MB
Events in quadrant A9,225,379489,244
Events in quadrant B3,200,311578,238
Events in quadrant C2,808,582568,257
Events in quadrant D3,974,628521,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315912
B0133781
C0123501
D0159421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6016183130.435505%
B6016701.163564%
C6016330.548537%
D60162073.440824%

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 7141 6017 1446 1446 20.25% 24.03%
B 7142 6017 18 18 0.25% 0.30%
C 7142 6018 0 0 0.00% 0.00%
D 7142 6018 173 173 2.42% 2.87%

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 13 251 5187358 37823.97 677 665 137.1
A 0 23 956551 6970.8 677 665 137.1
A 12 189 189254 1375.29 677 665 137.1
B 4 239 110304 788.65 741 727 138.9
B 11 51 52913 375.59 741 727 138.9
B 0 85 49146 348.48 741 727 138.9
C 14 234 5428 28.16 719 725 167.0
C 13 61 5190 26.73 719 725 167.0
C 12 4 1996 7.61 719 725 167.0
D 1 52 1157087 6799.66 707 691 170.1
D 8 195 56083 325.71 707 691 170.1
D 13 104 35505 204.71 707 691 170.1

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