ASTROSAT CZTI

Data Quality Report

Orbit 31561

Creation date: 2024-06-27T20:29:59.567934
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_056T01_9000004598_31561cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31561cztM0_level2_quad_clean.evt
Size (bytes)1,071,400,320176,904,000
Size1021.8 MB 168.7 MB
Events in quadrant A6,243,8161,124,872
Events in quadrant B10,326,9051,128,690
Events in quadrant C6,468,6961,094,205
Events in quadrant D8,493,9621,074,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276022
B0412592
C0280142
D0342582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135422181.609807%
B135433552.621280%
C135442912.148553%
D135445644.164206%

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 19249 13543 0 0 0.00% 0.00%
B 19250 13545 19 19 0.10% 0.14%
C 19250 13546 4 4 0.02% 0.03%
D 19250 13546 405 405 2.10% 2.99%

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 21925 62.51 1615 1581 325.5
A 3 137 17142 47.81 1615 1581 325.5
A 0 226 13559 36.8 1615 1581 325.5
B 6 159 3612281 11753.5 1596 1553 307.2
B 4 80 292284 946.38 1596 1553 307.2
B 12 1 75602 241.04 1596 1553 307.2
C 14 238 258135 709.03 1538 1544 361.9
C 3 233 96272 261.76 1538 1544 361.9
C 10 22 32863 86.54 1538 1544 361.9
D 12 218 1461181 3995.4 1540 1495 365.3
D 8 195 922806 2521.78 1540 1495 365.3
D 2 250 108022 291.58 1540 1495 365.3

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