ASTROSAT CZTI

Data Quality Report

Orbit 25586

Creation date: 2024-06-27T19:19:15.459814
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_043T02_9000003726_25586cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25586cztM0_level2_quad_clean.evt
Size (bytes)501,102,72091,955,520
Size477.9 MB 87.7 MB
Events in quadrant A3,248,403595,371
Events in quadrant B3,351,568607,747
Events in quadrant C3,282,824571,824
Events in quadrant D4,841,543545,915

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139060
B0141920
C0139390
D0190280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6657550.826198%
B6656180.270433%
C6656570.856370%
D66573094.641731%

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 7632 6658 29 29 0.38% 0.44%
B 7631 6657 0 0 0.00% 0.00%
C 7631 6657 7 7 0.09% 0.11%
D 7632 6658 267 267 3.50% 4.01%

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 6 16 112046 673.95 811 794 165.1
A 13 254 11544 65.12 811 794 165.1
A 3 137 7278 39.28 811 794 165.1
B 0 219 72149 458.99 814 793 155.5
B 5 171 58581 371.71 814 793 155.5
B 12 111 18562 114.3 814 793 155.5
C 14 238 124623 673.65 778 784 183.8
C 2 16 113710 614.29 778 784 183.8
C 0 207 11468 58.12 778 784 183.8
D 1 52 1187578 6256.22 775 750 189.7
D 8 195 508124 2674.56 775 750 189.7
D 7 38 95699 500.51 775 750 189.7

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