ASTROSAT CZTI

Data Quality Report

Orbit 20190227_A05_082T12_9000002738_level2

Creation date: 2025-11-28T00:56:19.143401
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/AS1A05_082T12_9000002738cztM0_level2.fits modeM0/AS1A05_082T12_9000002738cztM0_level2_quad_clean.evt
Size (bytes)189,164,160180,648,000
Size180.4 MB 172.3 MB
Events in quadrant A1,152,1761,061,881
Events in quadrant B1,085,6921,059,879
Events in quadrant C1,130,8321,024,217
Events in quadrant D996,110960,640

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413200
B0487850
C0466240
D0441320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198022051.035249%
B198028094.085446%
C198023431.732148%
D198022661.343299%

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 23052 19798 0 0 0.00% 0.00%
B 23052 19797 0 0 0.00% 0.00%
C 23051 19797 0 0 0.00% 0.00%
D 23052 19798 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 29 972 8.97 299 280 77.2
A 7 110 933 8.46 299 280 77.2
A 9 19 893 7.94 299 280 77.2
B 2 9 864 10.01 286 272 59.2
B 3 17 745 7.99 286 272 59.2
B 5 255 732 7.77 286 272 59.2
C 1 80 822 6.9 298 277 78.9
C 12 241 802 6.65 298 277 78.9
C 2 191 780 6.37 298 277 78.9
D 3 14 761 6.49 283 257 77.6
D 15 46 721 5.98 283 257 77.6
D 6 231 717 5.93 283 257 77.6

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