ASTROSAT CZTI

Data Quality Report

Orbit 27840

Creation date: 2024-06-27T19:45:04.136013
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/AS1A10_002T04_9000004022_27840cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27840cztM0_level2_quad_clean.evt
Size (bytes)650,712,960120,519,360
Size620.6 MB 114.9 MB
Events in quadrant A4,047,528797,654
Events in quadrant B5,077,753769,121
Events in quadrant C4,396,373758,809
Events in quadrant D5,614,299738,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175620
B0206480
C0186530
D0224110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8421620.736255%
B84224074.832581%
C84211822.161264%
D84213394.025650%

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 9066 8422 2 2 0.02% 0.02%
B 9067 8423 221 221 2.44% 2.62%
C 9066 8421 2 2 0.02% 0.02%
D 9066 8423 221 221 2.44% 2.62%

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 13 248 22303 100.9 1040 1014 211.0
A 13 254 15679 69.51 1040 1014 211.0
A 3 137 9874 41.99 1040 1014 211.0
B 10 245 962508 4969.07 1009 982 193.5
B 0 190 70902 361.34 1009 982 193.5
B 4 52 28486 142.14 1009 982 193.5
C 3 233 329636 1396.52 999 1003 235.3
C 14 238 159866 675.09 999 1003 235.3
C 8 128 7594 28.01 999 1003 235.3
D 1 52 1390028 5797.14 999 975 239.6
D 2 250 237962 989.05 999 975 239.6
D 13 104 64317 264.35 999 975 239.6

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