ASTROSAT CZTI

Data Quality Report

Orbit 36772

Creation date: 2024-06-27T21:31:27.344374
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/AS1A11_087T05_9000005240_36772cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36772cztM0_level2_quad_clean.evt
Size (bytes)1,648,630,080125,985,600
Size1.5 GB 120.1 MB
Events in quadrant A6,583,008764,334
Events in quadrant B23,775,026656,250
Events in quadrant C7,375,091763,956
Events in quadrant D11,283,433693,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278164
B0798443
C0299073
D0426983

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13557170.125396%
B13557754455.646529%
C135571160.855647%
D13557162912.015933%

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 18755 13560 8 8 0.04% 0.06%
B 18754 13558 6877 6877 36.67% 50.72%
C 18755 13560 98 98 0.52% 0.72%
D 18755 13560 1531 1531 8.16% 11.29%

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 10 83 424813 1342.52 1570 1539 315.3
A 9 143 60903 188.29 1570 1539 315.3
A 13 6 22442 66.3 1570 1539 315.3
B 12 1 18751621 85689.13 1145 1115 218.8
B 15 85 223247 1015.13 1145 1115 218.8
B 0 213 62582 280.9 1145 1115 218.8
C 15 214 571865 1607.44 1524 1536 354.8
C 14 254 393149 1103.74 1524 1536 354.8
C 0 207 347369 974.71 1524 1536 354.8
D 12 227 2721762 7738.06 1436 1397 351.6
D 12 6 1178009 3346.86 1436 1397 351.6
D 13 249 633119 1796.93 1436 1397 351.6

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