ASTROSAT CZTI

Data Quality Report

Orbit 20160121_G02_047T01_9000000284_level2

Creation date: 2025-10-25T23:04:22.248233
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/AS1G02_047T01_9000000284cztM0_level2.fits modeM0/AS1G02_047T01_9000000284cztM0_level2_quad_clean.evt
Size (bytes)455,806,080484,577,280
Size434.7 MB 462.1 MB
Events in quadrant A2,664,6242,852,654
Events in quadrant B2,640,6762,870,908
Events in quadrant C2,639,7322,809,993
Events in quadrant D2,266,9342,550,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02249790
B02345440
C02173110
D02328600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010660
B010660
C010660
D010660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523693730.712253%
B523694160.794363%
C523693210.612958%
D523694750.907025%

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 62184 52361 0 0 0.00% 0.00%
B 62184 52362 0 0 0.00% 0.00%
C 62184 52362 0 0 0.00% 0.00%
D 62184 52361 0 0 0.00% 0.00%

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 0 29 2402 10.79 690 643 163.0
A 14 188 2346 10.45 690 643 163.0
A 7 110 2345 10.44 690 643 163.0
B 2 9 2101 11.38 697 662 126.4
B 10 225 1715 8.33 697 662 126.4
B 14 254 1679 8.04 697 662 126.4
C 12 241 1781 6.69 695 643 169.9
C 2 191 1707 6.26 695 643 169.9
C 9 242 1702 6.23 695 643 169.9
D 6 231 1643 6.79 645 589 155.0
D 11 82 1631 6.72 645 589 155.0
D 1 19 1617 6.63 645 589 155.0

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