ASTROSAT CZTI

Data Quality Report

Orbit 37083

Creation date: 2024-06-27T21:35:20.366826
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/AS1A09_138T04_9000005282_37083cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37083cztM0_level2_quad_clean.evt
Size (bytes)443,712,96071,769,600
Size423.2 MB 68.4 MB
Events in quadrant A2,987,206454,509
Events in quadrant B3,475,810451,840
Events in quadrant C2,849,551448,340
Events in quadrant D3,740,095421,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123263
B0138632
C0117562
D0147772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668140.247001%
B56681492.628793%
C5668140.247001%
D56682063.634439%

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 7401 5669 7 7 0.09% 0.12%
B 7401 5669 120 120 1.62% 2.12%
C 7401 5669 10 10 0.14% 0.18%
D 7401 5669 195 195 2.63% 3.44%

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 266087 1979.02 672 661 134.1
A 7 3 97797 724.25 672 661 134.1
A 9 143 14906 106.21 672 661 134.1
B 5 184 739129 5826.55 657 639 126.7
B 4 232 59214 462.15 657 639 126.7
B 5 255 21701 166.18 657 639 126.7
C 15 214 242615 1599.38 647 652 151.3
C 0 10 62154 406.53 647 652 151.3
C 1 23 10118 62.57 647 652 151.3
D 1 47 410170 2568.52 649 629 159.4
D 12 17 173686 1085.36 649 629 159.4
D 1 52 131802 822.67 649 629 159.4

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