ASTROSAT CZTI

Data Quality Report

Orbit 22246

Creation date: 2024-06-27T18:38:27.928007
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/AS1T03_147T01_9000003290_22246cztM0_level2.evt modeM0/AS1T03_147T01_9000003290_22246cztM0_level2_quad_clean.evt
Size (bytes)662,955,84099,907,200
Size632.2 MB 95.3 MB
Events in quadrant A3,177,373666,806
Events in quadrant B3,290,431696,878
Events in quadrant C3,888,032652,698
Events in quadrant D9,295,932569,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132372
B0135372
C0153302
D0318072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293100.158907%
B6293310.492611%
C62932143.400604%
D6293274943.683458%

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 7603 6294 0 0 0.00% 0.00%
B 7603 6294 2 2 0.03% 0.03%
C 7603 6294 110 110 1.45% 1.75%
D 7603 6294 2387 2387 31.40% 37.93%

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 13 254 8598 47.26 824 808 164.8
A 0 226 7085 38.08 824 808 164.8
A 3 137 6688 35.67 824 808 164.8
B 12 111 18500 114.42 835 814 154.6
B 0 197 16622 102.27 835 814 154.6
B 11 111 16083 98.78 835 814 154.6
C 10 22 584413 3078.75 813 820 189.6
C 14 238 128792 675.12 813 820 189.6
C 0 10 6063 27.66 813 820 189.6
D 1 52 6558251 42468.75 648 634 154.4
D 12 235 190670 1230.72 648 634 154.4
D 2 136 55939 358.17 648 634 154.4

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