ASTROSAT CZTI

Data Quality Report

Orbit 09102

Creation date: 2024-06-27T15:41:09.416694
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_120T01_9000001266_09102cztM0_level2.evt modeM0/AS1A03_120T01_9000001266_09102cztM0_level2_quad_clean.evt
Size (bytes)422,441,28079,845,120
Size402.9 MB 76.1 MB
Events in quadrant A3,213,738503,368
Events in quadrant B2,958,039520,239
Events in quadrant C2,840,999497,567
Events in quadrant D3,366,458471,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013752529
B013041413
C012940432
D014638472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01286
C01288
D01284

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6076250.411455%
B6098320.524762%
C6096180.295276%
D60831171.923393%

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 7554 6238 3 3 0.04% 0.05%
B 7554 6258 1 1 0.01% 0.02%
C 7554 6241 3 3 0.04% 0.05%
D 7553 6241 90 90 1.19% 1.44%

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 8 5 328209 2178.52 740 725 150.3
A 15 174 16748 106.59 740 725 150.3
A 1 162 12523 78.48 740 725 150.3
B 12 111 15309 102.44 752 734 142.3
B 11 111 12753 84.47 752 734 142.3
B 0 198 11313 74.35 752 734 142.3
C 14 234 24577 143.61 720 725 166.1
C 13 61 5223 27.08 720 725 166.1
C 14 67 4699 23.93 720 725 166.1
D 2 14 264463 1457.55 703 684 181.0
D 1 52 148979 819.43 703 684 181.0
D 13 104 106696 585.79 703 684 181.0

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