ASTROSAT CZTI

Data Quality Report

Orbit 39344

Creation date: 2024-06-27T22:03:28.782823
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_018T01_9000005470_39344cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39344cztM0_level2_quad_clean.evt
Size (bytes)425,543,04092,793,600
Size405.8 MB 88.5 MB
Events in quadrant A2,756,670650,185
Events in quadrant B2,690,968673,272
Events in quadrant C2,560,453635,316
Events in quadrant D7,331,937479,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114443
B0115982
C0108892
D0255692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5303120.226287%
B5303410.773147%
C530330.056572%
D5303116121.893268%

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 7306 5304 5 5 0.07% 0.09%
B 7306 5304 22 22 0.30% 0.41%
C 7306 5304 0 0 0.00% 0.00%
D 7306 5304 1026 1026 14.04% 19.34%

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 423387 3484.02 601 589 121.4
A 13 254 7841 59.76 601 589 121.4
A 13 248 6895 51.96 601 589 121.4
B 5 184 207839 1829.86 600 584 113.3
B 5 172 94352 827.88 600 584 113.3
B 15 35 24285 209.26 600 584 113.3
C 15 214 242065 1798.36 582 587 134.3
C 10 20 14604 104.39 582 587 134.3
C 0 10 12420 88.12 582 587 134.3
D 12 235 4468399 35351.45 520 504 126.4
D 2 249 669092 5290.09 520 504 126.4
D 13 249 91670 721.34 520 504 126.4

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