ASTROSAT CZTI

Data Quality Report

Orbit 08581

Creation date: 2024-06-27T15:34:34.051838
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/AS1A03_102T01_9000001202_08581cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08581cztM0_level2_quad_clean.evt
Size (bytes)451,321,920111,314,880
Size430.4 MB 106.2 MB
Events in quadrant A2,993,563727,519
Events in quadrant B3,930,739756,483
Events in quadrant C2,872,828746,081
Events in quadrant D3,442,473701,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133143
B0160412
C0129752
D0145302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314360.570162%
B63141882.977510%
C6314280.443459%
D63141231.948052%

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 7529 6315 17 17 0.23% 0.27%
B 7529 6314 119 119 1.58% 1.88%
C 7529 6315 0 0 0.00% 0.00%
D 7529 6315 116 116 1.54% 1.84%

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 15 223 91544 617.38 731 717 147.1
A 15 239 41171 274.98 731 717 147.1
A 13 14 12117 77.49 731 717 147.1
B 5 255 699854 5047.17 745 728 138.5
B 0 219 163823 1177.42 745 728 138.5
B 0 214 77197 552.05 745 728 138.5
C 14 234 13321 75.36 730 733 167.0
C 13 61 5402 27.95 730 733 167.0
C 8 222 5088 26.07 730 733 167.0
D 1 52 351362 2011.41 717 695 174.3
D 12 233 161973 925.08 717 695 174.3
D 13 122 37800 212.83 717 695 174.3

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