ASTROSAT CZTI

Data Quality Report

Orbit 15466

Creation date: 2024-06-27T17:08:54.842297
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/AS1A04_203T01_9000002284_15466cztM0_level2.evt modeM0/AS1A04_203T01_9000002284_15466cztM0_level2_quad_clean.evt
Size (bytes)1,044,509,760165,392,640
Size996.1 MB 157.7 MB
Events in quadrant A6,540,0831,023,945
Events in quadrant B6,846,0541,036,390
Events in quadrant C7,869,6591,017,477
Events in quadrant D9,435,055968,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288714
B0296503
C0330113
D0377113

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139411270.910982%
B139411931.384406%
C139411370.982713%
D139417425.322430%

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 15542 13944 1 1 0.01% 0.01%
B 15542 13944 7 7 0.05% 0.05%
C 15542 13945 7 7 0.05% 0.05%
D 15542 13944 505 505 3.25% 3.62%

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 9 143 34210 95.11 1683 1643 342.4
A 12 96 21563 58.18 1683 1643 342.4
A 0 226 15060 39.18 1683 1643 342.4
B 3 209 55696 164.99 1686 1641 327.6
B 0 230 46452 136.78 1686 1641 327.6
B 4 142 40848 119.67 1686 1641 327.6
C 3 233 1439847 3812.4 1628 1637 377.2
C 10 22 22309 54.8 1628 1637 377.2
C 9 54 22122 54.3 1628 1637 377.2
D 1 52 2535219 6345.35 1609 1560 399.3
D 2 33 300929 749.75 1609 1560 399.3
D 7 38 184808 458.93 1609 1560 399.3

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