ASTROSAT CZTI

Data Quality Report

Orbit 49763

Creation date: 2024-12-10T07:39:23.709179
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/AS1A13_037T01_9000006440_49763cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49763cztM0_level2_quad_clean.evt
Size (bytes)1,180,189,44040,590,720
Size1.1 GB 38.7 MB
Events in quadrant A15,317,96480,623
Events in quadrant B3,605,876641,005
Events in quadrant C9,557,90611,368
Events in quadrant D14,712,54051,676

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498381
B0149811
C0328841
D0480181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358574390.327147%
B6358901.415539%
C6359626898.568957%
D6358586592.245989%

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 7362 6357 5986 5986 81.31% 94.16%
B 7363 6358 55 55 0.75% 0.87%
C 7363 6358 1937 1937 26.31% 30.47%
D 7362 6357 5256 5256 71.39% 82.68%

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 6991375 55002.7 467 453 127.1
A 12 50 2140588 16838.01 467 453 127.1
A 4 205 676861 5321.8 467 453 127.1
B 4 171 274495 1934.09 670 650 141.6
B 4 21 106621 748.44 670 650 141.6
B 5 185 104253 731.72 670 650 141.6
C 15 180 2410220 79145.42 87 86 30.5
C 15 190 1854934 60910.61 87 86 30.5
C 15 235 773191 25387.68 87 86 30.5
D 7 61 2765582 30192.86 283 273 91.6
D 15 40 1879542 20518.69 283 273 91.6
D 15 142 1865790 20368.54 283 273 91.6

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