ASTROSAT CZTI

Data Quality Report

Orbit 23756

Creation date: 2024-06-27T18:58:21.555145
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/AS1C05_007T01_9000003518_23756cztM0_level2.evt modeM0/AS1C05_007T01_9000003518_23756cztM0_level2_quad_clean.evt
Size (bytes)617,238,720102,568,320
Size588.6 MB 97.8 MB
Events in quadrant A3,469,743655,522
Events in quadrant B3,591,613673,359
Events in quadrant C3,821,832650,766
Events in quadrant D7,311,851614,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151572
B0153192
C0159102
D0265992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7359620.842506%
B7359891.209403%
C73591622.201386%
D73597319.933415%

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 7919 7360 0 0 0.00% 0.00%
B 7919 7360 0 0 0.00% 0.00%
C 7919 7359 7 7 0.09% 0.10%
D 7919 7360 742 742 9.37% 10.08%

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 13 254 12963 66.91 899 881 180.6
A 3 137 8070 39.81 899 881 180.6
A 0 226 7804 38.34 899 881 180.6
B 12 111 21402 117.95 903 879 174.0
B 11 111 19453 106.75 903 879 174.0
B 14 111 17472 95.36 903 879 174.0
C 14 238 135901 647.59 878 885 208.5
C 7 247 108394 515.66 878 885 208.5
C 0 10 76545 362.9 878 885 208.5
D 1 52 3639357 17183.64 866 842 211.7
D 8 195 400716 1888.49 866 842 211.7
D 2 234 28026 128.38 866 842 211.7

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