ASTROSAT CZTI

Data Quality Report

Orbit 19642

Creation date: 2024-06-27T18:05:06.627708
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/AS1A05_101T08_9000002922_19642cztM0_level2.evt modeM0/AS1A05_101T08_9000002922_19642cztM0_level2_quad_clean.evt
Size (bytes)517,631,040100,313,280
Size493.7 MB 95.7 MB
Events in quadrant A3,139,982660,516
Events in quadrant B3,421,298671,507
Events in quadrant C3,293,310654,724
Events in quadrant D5,402,050618,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130092
B0139412
C0134212
D0202202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193350.565154%
B6193881.420959%
C6193731.178750%
D61935008.073632%

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 7539 6195 1 1 0.01% 0.02%
B 7539 6195 27 27 0.36% 0.44%
C 7539 6195 0 0 0.00% 0.00%
D 7539 6195 405 405 5.37% 6.54%

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 5 16 7252 39.92 813 794 161.8
A 0 226 7038 38.6 813 794 161.8
A 12 194 5911 31.63 813 794 161.8
B 3 112 157361 1047.28 808 790 149.5
B 7 220 53500 352.57 808 790 149.5
B 3 64 29708 193.43 808 790 149.5
C 14 238 126131 676.28 803 811 185.3
C 3 233 24053 125.42 803 811 185.3
C 9 221 6255 29.38 803 811 185.3
D 12 218 1175312 6225.83 786 765 188.7
D 1 52 686043 3632.4 786 765 188.7
D 7 238 523728 2772.03 786 765 188.7

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