ASTROSAT CZTI

Data Quality Report

Orbit 24306

Creation date: 2024-06-27T19:04:36.051901
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_9000003594_24306cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24306cztM0_level2_quad_clean.evt
Size (bytes)523,477,440104,495,040
Size499.2 MB 99.7 MB
Events in quadrant A3,427,995666,775
Events in quadrant B3,503,145686,867
Events in quadrant C4,298,673667,231
Events in quadrant D4,137,865645,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148042
B0148762
C0175442
D0169972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7161981.368524%
B71611301.815389%
C71611782.485686%
D71611732.415864%

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 7851 7162 0 0 0.00% 0.00%
B 7851 7161 3 3 0.04% 0.04%
C 7851 7162 44 44 0.56% 0.61%
D 7851 7161 108 108 1.38% 1.51%

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 3 1 39570 219.03 875 858 176.7
A 5 203 15827 84.69 875 858 176.7
A 13 254 10616 55.21 875 858 176.7
B 0 230 45947 272.87 873 851 165.3
B 12 17 22335 130.0 873 851 165.3
B 12 111 20597 119.48 873 851 165.3
C 7 247 573552 2920.55 841 849 196.1
C 2 16 270219 1373.68 841 849 196.1
C 14 238 134604 682.1 841 849 196.1
D 1 52 628708 3035.03 848 823 206.9
D 8 195 199105 958.44 848 823 206.9
D 12 233 92494 443.11 848 823 206.9

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