ASTROSAT CZTI

Data Quality Report

Orbit 41324

Creation date: 2024-06-27T22:27:34.061618
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_025T16_9000005650_41324cztM0_level2.fits modeM0/AS1A12_025T16_9000005650_41324cztM0_level2_quad_clean.evt
Size (bytes)188,303,04046,229,760
Size179.6 MB 44.1 MB
Events in quadrant A1,503,858311,555
Events in quadrant B1,631,695315,559
Events in quadrant C1,579,261293,954
Events in quadrant D2,034,576277,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061132
B067071
C063691
D080461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281670.248580%
B2816712.521307%
C28161003.551136%
D2816541.917614%

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 4159 2817 3 3 0.07% 0.11%
B 4159 2817 43 43 1.03% 1.53%
C 4159 2817 94 94 2.26% 3.34%
D 4158 2816 47 47 1.13% 1.67%

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 255974 3829.82 317 310 66.8
A 12 189 8080 116.39 317 310 66.8
A 2 79 7370 105.76 317 310 66.8
B 5 255 356804 5658.48 314 304 63.0
B 0 190 34026 535.25 314 304 63.0
B 12 111 8168 124.82 314 304 63.0
C 0 10 279209 3848.3 302 304 72.5
C 15 214 118733 1634.07 302 304 72.5
C 8 79 2730 33.47 302 304 72.5
D 2 120 551461 7209.21 303 294 76.5
D 2 249 87027 1134.46 303 294 76.5
D 1 47 86532 1127.98 303 294 76.5

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