ASTROSAT CZTI

Data Quality Report

Orbit 11150

Creation date: 2024-06-27T16:08:56.143150
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/AS1A04_180T01_9000001622_11150cztM0_level2.evt modeM0/AS1A04_180T01_9000001622_11150cztM0_level2_quad_clean.evt
Size (bytes)561,752,64080,075,520
Size535.7 MB 76.4 MB
Events in quadrant A5,744,157481,768
Events in quadrant B4,212,536515,785
Events in quadrant C2,818,684517,422
Events in quadrant D3,826,003486,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262945145
B0203143841
C0151512305
D0181882726

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014727
B014525
C014529
D014519

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594693615.741675%
B60465849.659279%
C61391632.655156%
D61132834.629478%

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 7494 6230 450 450 6.00% 7.22%
B 7503 6312 153 153 2.04% 2.42%
C 7504 6428 1 1 0.01% 0.02%
D 7497 6405 89 89 1.19% 1.39%

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 2026517 14070.3 696 678 144.0
A 14 238 835428 5797.69 696 678 144.0
A 8 15 161243 1115.19 696 678 144.0
B 4 239 627307 4461.3 721 704 140.5
B 10 16 536974 3818.15 721 704 140.5
B 15 204 82998 585.92 721 704 140.5
C 13 61 5318 27.14 721 722 169.4
C 9 204 3473 16.24 721 722 169.4
C 14 234 2306 9.35 721 722 169.4
D 1 52 453878 2572.68 719 696 176.2
D 14 34 121166 683.9 719 696 176.2
D 13 172 110705 624.51 719 696 176.2

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