ASTROSAT CZTI

Data Quality Report

Orbit 41817

Creation date: 2024-06-27T22:33:06.464999
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_087T01_9000005702_41817cztM0_level2.fits modeM0/AS1A12_087T01_9000005702_41817cztM0_level2_quad_clean.evt
Size (bytes)159,603,84041,558,400
Size152.2 MB 39.6 MB
Events in quadrant A1,529,730280,090
Events in quadrant B1,183,667283,890
Events in quadrant C1,548,951257,101
Events in quadrant D1,442,691252,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061091
B053871
C062801
D060781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140196792178728140196322476078
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2579200.775494%
B257980.310198%
C25791505.816208%
D2579712.753005%

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 2579 2579 15 15 0.58% 0.58%
B 2578 2578 5 5 0.19% 0.19%
C 2578 2578 144 144 5.59% 5.59%
D 2578 2578 74 74 2.87% 2.87%

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 273345 4698.21 275 270 58.1
A 15 223 138846 2384.18 275 270 58.1
A 12 189 34040 581.01 275 270 58.1
B 5 255 77346 1409.27 273 265 54.7
B 0 245 15321 275.27 273 265 54.7
B 0 186 13000 232.83 273 265 54.7
C 0 10 437607 7266.45 250 252 60.2
C 15 214 100661 1668.25 250 252 60.2
C 15 159 32638 538.08 250 252 60.2
D 13 249 245083 3727.15 263 255 65.7
D 12 79 135371 2056.94 263 255 65.7
D 2 234 14735 220.43 263 255 65.7

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