ASTROSAT CZTI

Data Quality Report

Orbit 28669

Creation date: 2024-06-27T19:54:41.743622
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_073T08_9000004112_28669cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28669cztM0_level2_quad_clean.evt
Size (bytes)636,249,600106,024,320
Size606.8 MB 101.1 MB
Events in quadrant A3,696,514699,987
Events in quadrant B5,509,173686,710
Events in quadrant C3,656,986670,607
Events in quadrant D5,904,808637,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157852
B0213832
C0155692
D0225042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7407961.296071%
B74084826.506479%
C74081091.471382%
D74083444.643629%

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 7772 7408 13 13 0.17% 0.18%
B 7773 7408 227 227 2.92% 3.06%
C 7773 7408 19 19 0.24% 0.26%
D 7773 7409 271 271 3.49% 3.66%

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 15 174 142242 756.28 920 901 186.9
A 13 254 13522 67.53 920 901 186.9
A 3 137 8869 42.63 920 901 186.9
B 10 245 1962046 11385.38 894 872 172.3
B 12 111 21193 117.97 894 872 172.3
B 11 111 19020 105.35 894 872 172.3
C 14 238 148609 716.97 873 879 206.0
C 2 16 84179 404.28 873 879 206.0
C 14 254 13812 62.77 873 879 206.0
D 1 52 1278655 6057.34 875 852 211.0
D 8 195 880754 4171.12 875 852 211.0
D 13 104 294544 1392.23 875 852 211.0

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