ASTROSAT CZTI

Data Quality Report

Orbit 49857

Creation date: 2024-12-17T09:04:55.804539
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_49857cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49857cztM0_level2_quad_clean.evt
Size (bytes)948,620,16059,155,200
Size904.7 MB 56.4 MB
Events in quadrant A7,333,659540,497
Events in quadrant B3,451,108660,870
Events in quadrant C11,002,68749,897
Events in quadrant D12,829,07987,102

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262750
B0148440
C0371680
D0425300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6397124919.524777%
B63982764.313848%
C63986398100.000000%
D6398634299.124726%

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 7046 6396 977 977 13.87% 15.28%
B 7048 6399 64 64 0.91% 1.00%
C 7047 6397 1331 1331 18.89% 20.81%
D 7047 6397 3529 3529 50.08% 55.17%

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 4 4 1945989 12205.28 637 620 159.4
A 6 250 576313 3611.91 637 620 159.4
A 11 3 403661 2528.69 637 620 159.4
B 4 206 281443 1908.8 692 670 147.1
B 1 255 85631 577.6 692 670 147.1
B 4 190 74802 503.98 692 670 147.1
C 15 230 3452740 100417.33 72 69 34.4
C 4 111 1525399 44362.63 72 69 34.4
C 15 189 1328366 38632.13 72 69 34.4
D 7 61 6199705 145909.8 127 121 42.5
D 8 129 3233186 76091.53 127 121 42.5
D 15 185 856269 20149.8 127 121 42.5

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