ASTROSAT CZTI

Data Quality Report

Orbit 14964

Creation date: 2024-06-27T17:01:52.842490
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/AS1T02_056T01_9000002210_14964cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14964cztM0_level2_quad_clean.evt
Size (bytes)828,889,92061,692,480
Size790.5 MB 58.8 MB
Events in quadrant A3,598,863400,321
Events in quadrant B3,839,834394,164
Events in quadrant C3,454,993390,041
Events in quadrant D13,768,337226,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147053
B0153562
C0142192
D0453992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6531390.597152%
B65311752.679528%
C6531130.199051%
D6531415963.680906%

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 7742 6533 1 1 0.01% 0.02%
B 7742 6533 105 105 1.36% 1.61%
C 7742 6533 0 0 0.00% 0.00%
D 7742 6532 3967 3967 51.24% 60.73%

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 12 189 126197 746.77 835 820 167.9
A 1 162 114125 674.87 835 820 167.9
A 1 178 56009 328.72 835 820 167.9
B 3 64 354011 2253.33 829 810 156.7
B 10 16 161183 1023.14 829 810 156.7
B 4 48 30337 188.37 829 810 156.7
C 7 247 197080 1062.16 801 806 184.8
C 3 233 118229 635.45 801 806 184.8
C 8 128 10845 54.33 801 806 184.8
D 7 254 11330935 83279.66 563 547 136.1
D 7 223 128342 939.31 563 547 136.1
D 9 1 58755 427.84 563 547 136.1

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