ASTROSAT CZTI

Data Quality Report

Orbit 30720

Creation date: 2024-06-27T20:18:50.080823
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_071T44_9000004434_30720cztM0_level2.evt modeM0/AS1A10_071T44_9000004434_30720cztM0_level2_quad_clean.evt
Size (bytes)639,342,720101,787,840
Size609.7 MB 97.1 MB
Events in quadrant A3,918,888668,778
Events in quadrant B5,784,359663,682
Events in quadrant C4,625,577627,497
Events in quadrant D4,551,107625,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01442
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159785
B02239223
C0182509
D01814315

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71402573.599440%
B71353875.423966%
C71384836.766601%
D71402783.893557%

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 7307 7142 26 26 0.36% 0.36%
B 7307 7142 27 27 0.37% 0.38%
C 7307 7142 95 95 1.30% 1.33%
D 7308 7143 103 103 1.41% 1.44%

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 13 241469 1278.96 929 910 188.1
A 8 192 93410 491.79 929 910 188.1
A 13 254 14031 69.76 929 910 188.1
B 6 159 1952268 11087.09 906 882 176.0
B 6 36 108953 614.02 906 882 176.0
B 5 255 62981 352.82 906 882 176.0
C 10 22 636416 3068.86 874 881 207.1
C 3 233 427674 2060.89 874 881 207.1
C 14 238 140093 672.22 874 881 207.1
D 8 195 548107 2505.45 903 879 218.4
D 2 250 250455 1142.67 903 879 218.4
D 13 249 213773 974.72 903 879 218.4

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