ASTROSAT CZTI

Data Quality Report

Orbit 40332

Creation date: 2024-06-27T22:15:01.689704
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/AS1A12_056T02_9000005538_40332cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40332cztM0_level2_quad_clean.evt
Size (bytes)330,226,56086,057,280
Size314.9 MB 82.1 MB
Events in quadrant A2,928,859596,136
Events in quadrant B2,828,144602,507
Events in quadrant C2,486,464574,043
Events in quadrant D3,603,772494,143

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116483
B0115032
C0102182
D0140462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4835491.013444%
B4835941.944157%
C4835160.330920%
D48353677.590486%

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 6928 4836 42 42 0.61% 0.87%
B 6928 4836 68 68 0.98% 1.41%
C 6928 4836 18 18 0.26% 0.37%
D 6928 4835 355 355 5.12% 7.34%

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 10 83 440141 3906.33 551 542 112.5
A 13 248 250048 2217.14 551 542 112.5
A 6 10 87233 770.35 551 542 112.5
B 5 255 227394 2161.83 550 536 104.9
B 4 171 220757 2098.59 550 536 104.9
B 0 245 113973 1080.99 550 536 104.9
C 15 214 224095 1778.95 539 543 125.7
C 14 254 114696 908.39 539 543 125.7
C 0 10 37164 291.42 539 543 125.7
D 12 227 913560 7277.41 514 501 125.5
D 1 47 250791 1994.9 514 501 125.5
D 12 79 133060 1056.54 514 501 125.5

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