ASTROSAT CZTI

Data Quality Report

Orbit 02150

Creation date: 2024-06-27T14:14:38.410134
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/AS1T01_072T02_9000000336_02150cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02150cztM0_level2_quad_clean.evt
Size (bytes)393,543,36090,178,560
Size375.3 MB 86.0 MB
Events in quadrant A2,799,112568,001
Events in quadrant B2,995,360578,807
Events in quadrant C2,908,952559,219
Events in quadrant D2,750,203549,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137891
B0140041
C0140511
D0139481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6819520.762575%
B6819410.601261%
C6819230.337293%
D6819350.513272%

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 7459 6820 0 0 0.00% 0.00%
B 7459 6820 1 1 0.01% 0.01%
C 7459 6820 7 7 0.09% 0.10%
D 7459 6820 5 5 0.07% 0.07%

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 0 1 8214 52.02 726 714 144.2
A 15 175 3678 20.56 726 714 144.2
A 14 188 1724 7.01 726 714 144.2
B 5 68 77804 561.46 746 733 137.3
B 0 234 20455 143.67 746 733 137.3
B 4 185 20333 142.79 746 733 137.3
C 9 85 140371 894.45 702 704 156.1
C 14 223 6358 36.21 702 704 156.1
C 10 65 4569 24.75 702 704 156.1
D 9 64 32377 198.86 700 685 159.4
D 10 254 19257 116.54 700 685 159.4
D 5 233 17334 104.47 700 685 159.4

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