ASTROSAT CZTI

Data Quality Report

Orbit 26015

Creation date: 2024-06-27T19:23:52.239430
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_068T01_9000003760_26015cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26015cztM0_level2_quad_clean.evt
Size (bytes)575,976,960106,986,240
Size549.3 MB 102.0 MB
Events in quadrant A3,966,027705,053
Events in quadrant B3,545,772711,597
Events in quadrant C3,485,142673,468
Events in quadrant D5,949,533639,464

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164280
B0152150
C0151370
D0226830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7326981.337701%
B7327470.641463%
C7327751.023611%
D73275857.984168%

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 7711 7327 77 77 1.00% 1.05%
B 7712 7328 0 0 0.00% 0.00%
C 7712 7328 0 0 0.00% 0.00%
D 7712 7327 524 524 6.79% 7.15%

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 13 478244 2631.29 903 883 181.4
A 13 254 10602 53.57 903 883 181.4
A 3 137 8558 42.31 903 883 181.4
B 0 190 25274 141.65 892 871 172.3
B 12 111 20906 116.3 892 871 172.3
B 11 111 18571 102.74 892 871 172.3
C 14 238 135954 679.31 851 855 198.9
C 3 233 29579 144.43 851 855 198.9
C 13 61 5876 25.25 851 855 198.9
D 1 52 1403370 6421.58 842 821 218.4
D 12 2 1152344 5272.26 842 821 218.4
D 12 233 103747 471.25 842 821 218.4

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