ASTROSAT CZTI

Data Quality Report

Orbit 00805

Creation date: 2024-06-27T14:03:11.346915
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/AS1P01_010T01_9000000112_00805cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00805cztM0_level2_quad_clean.evt
Size (bytes)1,352,695,680127,523,520
Size1.3 GB 121.6 MB
Events in quadrant A10,221,262828,953
Events in quadrant B10,697,987829,616
Events in quadrant C10,102,003812,570
Events in quadrant D9,387,327805,779

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363460
B0378120
C0360320
D0339250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8417650.772247%
B8417620.736604%
C8417700.831650%
D8417610.724724%

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 10127 8418 302 302 2.98% 3.59%
B 10127 8418 344 344 3.40% 4.09%
C 10127 8418 315 315 3.11% 3.74%
D 10127 8418 227 227 2.24% 2.70%

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 17 28686 40.88 2634 2653 636.8
A 15 233 27209 38.56 2634 2653 636.8
A 14 79 24898 34.93 2634 2653 636.8
B 15 22 101964 153.2 2737 2747 647.6
B 0 23 49919 72.84 2737 2747 647.6
B 0 220 47060 68.42 2737 2747 647.6
C 9 52 178315 254.17 2482 2564 691.5
C 15 241 55129 76.02 2482 2564 691.5
C 9 83 49078 67.27 2482 2564 691.5
D 13 170 99954 130.26 2425 2511 748.0
D 1 4 55800 71.24 2425 2511 748.0
D 13 13 36813 45.86 2425 2511 748.0

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