ASTROSAT CZTI

Data Quality Report

Orbit 41092

Creation date: 2024-06-27T22:24:19.756733
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_095T02_9000005596_41092cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41092cztM0_level2_quad_clean.evt
Size (bytes)983,459,520238,345,920
Size937.9 MB 227.3 MB
Events in quadrant A8,537,8601,621,069
Events in quadrant B8,504,6591,642,578
Events in quadrant C7,580,0271,576,975
Events in quadrant D10,594,4621,317,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343225
B0359044
C0319754
D0423864

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15324260.169668%
B153242651.729313%
C15324880.574263%
D1532514199.259380%

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 19621 15327 8 8 0.04% 0.05%
B 19621 15327 157 157 0.80% 1.02%
C 19621 15327 64 64 0.33% 0.42%
D 19622 15328 1196 1196 6.10% 7.80%

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 1378917 3942.57 1713 1678 349.3
A 12 189 329003 937.02 1713 1678 349.3
A 2 79 102298 288.04 1713 1678 349.3
B 0 186 819884 2498.14 1691 1644 327.5
B 5 255 631049 1921.62 1691 1644 327.5
B 0 190 111658 335.88 1691 1644 327.5
C 15 214 653917 1685.43 1666 1674 387.0
C 14 254 254847 654.21 1666 1674 387.0
C 0 10 100085 254.3 1666 1674 387.0
D 2 249 3859853 9759.89 1601 1552 395.3
D 13 249 254316 639.39 1601 1552 395.3
D 9 19 95479 237.6 1601 1552 395.3

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