ASTROSAT CZTI

Data Quality Report

Orbit 13831

Creation date: 2024-06-27T16:46:39.512909
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/AS1A04_199T01_9000002040_13831cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13831cztM0_level2_quad_clean.evt
Size (bytes)1,326,980,160230,192,640
Size1.2 GB 219.5 MB
Events in quadrant A8,446,5701,461,102
Events in quadrant B8,963,8011,470,083
Events in quadrant C8,480,0641,452,061
Events in quadrant D13,067,3711,334,251

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373384
B0385283
C0372043
D0506773

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182002011.104396%
B182003241.780220%
C182001190.653846%
D182009885.428571%

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 20021 18202 2 2 0.01% 0.01%
B 20021 18203 98 98 0.49% 0.54%
C 20021 18203 0 0 0.00% 0.00%
D 20021 18202 740 740 3.70% 4.07%

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 23 60070 131.5 2156 2108 440.8
A 1 162 31102 65.78 2156 2108 440.8
A 9 143 29265 61.61 2156 2108 440.8
B 3 64 270706 655.37 2145 2089 409.9
B 4 80 73846 175.07 2145 2089 409.9
B 10 244 67318 159.14 2145 2089 409.9
C 3 233 299095 609.89 2097 2102 487.0
C 13 61 15040 26.57 2097 2102 487.0
C 14 234 7159 10.38 2097 2102 487.0
D 5 222 2147875 4333.79 2043 1981 495.2
D 1 52 874594 1762.3 2043 1981 495.2
D 8 195 826173 1664.51 2043 1981 495.2

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