ASTROSAT CZTI

Data Quality Report

Orbit 50692

Creation date: 2025-02-10T20:56:53.537908
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/AS1T05_241T01_9000006446_50692cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50692cztM0_level2_quad_clean.evt
Size (bytes)648,028,80087,171,840
Size618.0 MB 83.1 MB
Events in quadrant A7,800,946477,224
Events in quadrant B3,812,120649,937
Events in quadrant C4,493,234564,535
Events in quadrant D7,392,504506,390

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274331
B0155821
C0176591
D0264331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6321159225.185888%
B63221101.739956%
C63223465.472952%
D632266410.503005%

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 7216 6322 1842 1842 25.53% 29.14%
B 7217 6323 43 43 0.60% 0.68%
C 7217 6323 309 309 4.28% 4.89%
D 7217 6323 773 773 10.71% 12.23%

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 12 80 4293481 27104.2 635 618 158.4
A 4 3 252486 1590.24 635 618 158.4
A 8 38 220464 1388.06 635 618 158.4
B 4 170 746899 5267.18 661 638 141.7
B 8 128 62250 434.86 661 638 141.7
B 5 185 48933 340.87 661 638 141.7
C 4 5 760121 4291.5 640 635 177.0
C 13 113 544307 3072.03 640 635 177.0
C 13 3 291025 1640.86 640 635 177.0
D 2 226 2315004 13193.3 627 606 175.4
D 10 181 501329 2854.39 627 606 175.4
D 14 195 384717 2189.64 627 606 175.4

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