ASTROSAT CZTI

Data Quality Report

Orbit 27599

Creation date: 2024-06-27T19:42:01.773849
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/AS1T03_257T01_9000003976_27599cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27599cztM0_level2_quad_clean.evt
Size (bytes)501,145,92093,401,280
Size477.9 MB 89.1 MB
Events in quadrant A3,133,185609,360
Events in quadrant B3,597,678619,688
Events in quadrant C3,264,975587,043
Events in quadrant D4,737,627556,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136170
B0148430
C0139190
D0184660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534400.612182%
B65341031.576370%
C6534861.316192%
D65343084.713805%

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 7619 6535 5 5 0.07% 0.08%
B 7619 6535 38 38 0.50% 0.58%
C 7619 6535 1 1 0.01% 0.02%
D 7619 6535 246 246 3.23% 3.76%

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 8 192 14898 87.19 806 789 161.8
A 13 254 11330 65.14 806 789 161.8
A 3 137 7469 41.28 806 789 161.8
B 3 64 262340 1719.93 800 778 152.1
B 10 245 105374 687.78 800 778 152.1
B 0 230 34990 224.97 800 778 152.1
C 14 238 124642 679.77 774 777 182.2
C 10 22 61237 331.81 774 777 182.2
C 2 16 49672 268.34 774 777 182.2
D 1 52 1486630 8026.35 772 751 185.1
D 6 112 96606 517.78 772 751 185.1
D 7 80 91792 491.78 772 751 185.1

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