ASTROSAT CZTI

Data Quality Report

Orbit 38282

Creation date: 2024-06-27T21:50:42.253359
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/AS1A07_145T01_9000005370_38282cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38282cztM0_level2_quad_clean.evt
Size (bytes)1,266,468,480249,742,080
Size1.2 GB 238.2 MB
Events in quadrant A8,265,8391,731,144
Events in quadrant B9,111,7561,768,167
Events in quadrant C7,407,2281,693,954
Events in quadrant D20,889,2341,289,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337545
B0375174
C0317684
D0733704

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15623360.230429%
B156232831.811432%
C15623180.115215%
D15623281918.043910%

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 19804 15626 7 7 0.04% 0.04%
B 19804 15626 186 186 0.94% 1.19%
C 19804 15626 6 6 0.03% 0.04%
D 19804 15626 2897 2897 14.63% 18.54%

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 1013914 2886.14 1742 1705 350.7
A 12 16 235054 665.36 1742 1705 350.7
A 12 189 221796 627.55 1742 1705 350.7
B 0 183 1140645 3473.04 1723 1675 327.9
B 5 172 774353 2356.11 1723 1675 327.9
B 0 229 133697 402.57 1723 1675 327.9
C 15 214 651500 1662.0 1695 1712 391.0
C 15 208 65114 162.17 1695 1712 391.0
C 9 236 35032 85.22 1695 1712 391.0
D 2 16 4768559 12055.04 1616 1573 395.4
D 10 203 4048143 10233.2 1616 1573 395.4
D 12 235 3168259 8008.1 1616 1573 395.4

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