ASTROSAT CZTI

Data Quality Report

Orbit 31028

Creation date: 2024-06-27T20:22:28.257699
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/AS1A10_071T54_9000004482_31028cztM0_level2.evt modeM0/AS1A10_071T54_9000004482_31028cztM0_level2_quad_clean.evt
Size (bytes)1,018,774,080163,814,400
Size971.6 MB 156.2 MB
Events in quadrant A5,980,4581,053,638
Events in quadrant B10,061,6661,044,923
Events in quadrant C6,171,3891,010,660
Events in quadrant D7,790,271982,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256592
B0391362
C0258312
D0312482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125861401.112347%
B125874353.455947%
C125872081.652499%
D125872481.970287%

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 13801 12586 0 0 0.00% 0.00%
B 13802 12587 151 151 1.09% 1.20%
C 13802 12587 0 0 0.00% 0.00%
D 13802 12587 121 121 0.88% 0.96%

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 13 254 23840 72.64 1544 1511 307.4
A 3 137 16264 47.99 1544 1511 307.4
A 0 226 13068 37.6 1544 1511 307.4
B 6 159 3481125 11883.73 1513 1472 292.8
B 4 52 355168 1207.94 1513 1472 292.8
B 0 183 79514 266.53 1513 1472 292.8
C 14 238 237626 680.04 1478 1486 347.2
C 3 233 72191 203.62 1478 1486 347.2
C 0 10 45885 127.86 1478 1486 347.2
D 8 195 1087200 3084.35 1483 1442 352.0
D 2 250 292282 826.2 1483 1442 352.0
D 12 218 288863 816.49 1483 1442 352.0

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