ASTROSAT CZTI

Data Quality Report

Orbit 39383

Creation date: 2024-06-27T22:03:55.848495
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/AS1A12_018T01_9000005470_39383cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39383cztM0_level2_quad_clean.evt
Size (bytes)621,368,640114,307,200
Size592.6 MB 109.0 MB
Events in quadrant A3,762,204821,089
Events in quadrant B5,999,397723,359
Events in quadrant C3,618,372796,687
Events in quadrant D9,046,873604,720

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157663
B0227032
C0153962
D0320042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7400220.297297%
B7400111815.108108%
C7400150.202703%
D7400160921.743243%

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 10386 7402 4 4 0.04% 0.05%
B 10386 7402 971 971 9.35% 13.12%
C 10386 7402 8 8 0.08% 0.11%
D 10386 7402 1285 1285 12.37% 17.36%

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 10 83 535126 3195.15 825 809 167.2
A 15 191 23554 136.01 825 809 167.2
A 13 254 9728 53.33 825 809 167.2
B 5 200 2458723 16764.16 753 732 146.6
B 6 203 384808 2619.5 753 732 146.6
B 5 172 180715 1227.53 753 732 146.6
C 15 214 306913 1630.73 803 808 187.7
C 9 187 98255 519.13 803 808 187.7
C 14 254 44321 231.81 803 808 187.7
D 12 235 5054384 28140.93 727 705 179.6
D 13 249 811900 4517.06 727 705 179.6
D 12 233 139704 774.0 727 705 179.6

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