ASTROSAT CZTI

Data Quality Report

Orbit 42077

Creation date: 2024-06-27T22:36:32.891422
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_037T03_9000005738_42077cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42077cztM0_level2_quad_clean.evt
Size (bytes)768,911,040184,919,040
Size733.3 MB 176.4 MB
Events in quadrant A10,476,6371,202,389
Events in quadrant B5,105,3661,272,581
Events in quadrant C5,313,6501,211,509
Events in quadrant D6,667,7451,108,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03901224
B0237086
C02345313
D0277667

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116065774.971566%
B11612450.387530%
C1160770.060308%
D116122001.722356%

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 14329 11614 525 525 3.66% 4.52%
B 14330 11616 19 19 0.13% 0.16%
C 14330 11614 0 0 0.00% 0.00%
D 14330 11617 151 151 1.05% 1.30%

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 15 222 3919679 15635.48 1224 1197 250.6
A 10 83 1061686 4231.55 1224 1197 250.6
A 15 223 656029 2612.9 1224 1197 250.6
B 5 255 120261 496.99 1248 1216 239.5
B 3 112 43809 177.82 1248 1216 239.5
B 12 111 30545 122.44 1248 1216 239.5
C 15 214 475363 1646.15 1224 1232 288.0
C 0 207 43821 147.87 1224 1232 288.0
C 12 249 21321 69.75 1224 1232 288.0
D 1 52 675496 2265.4 1216 1181 297.7
D 12 6 302745 1013.12 1216 1181 297.7
D 13 249 249193 833.21 1216 1181 297.7

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