ASTROSAT CZTI

Data Quality Report

Orbit 39223

Creation date: 2024-06-27T22:01:57.797109
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_054T04_9000005446_39223cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39223cztM0_level2_quad_clean.evt
Size (bytes)1,284,396,480157,409,280
Size1.2 GB 150.1 MB
Events in quadrant A6,146,0411,287,172
Events in quadrant B6,572,6131,256,153
Events in quadrant C5,359,3541,245,280
Events in quadrant D28,563,452171,841

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258974
B0279713
C0235833
D0928013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116391361.168485%
B116395504.725492%
C1163990.077326%
D116391030088.495575%

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 15788 11642 83 83 0.53% 0.71%
B 15788 11642 348 348 2.20% 2.99%
C 15788 11642 1 1 0.01% 0.01%
D 15788 11641 8812 8812 55.81% 75.70%

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 827826 3203.76 1278 1252 258.0
A 13 248 311942 1204.22 1278 1252 258.0
A 15 174 62836 238.7 1278 1252 258.0
B 5 172 630364 2637.73 1241 1205 238.5
B 5 255 438286 1832.45 1241 1205 238.5
B 12 18 434812 1817.88 1241 1205 238.5
C 15 214 477471 1646.84 1240 1245 289.2
C 0 239 20459 66.44 1240 1245 289.2
C 3 233 12427 38.67 1240 1245 289.2
D 12 235 19231833 138666.15 573 555 138.7
D 1 47 6116529 44098.92 573 555 138.7
D 5 222 318140 2289.93 573 555 138.7

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