ASTROSAT CZTI

Data Quality Report

Orbit 28236

Creation date: 2024-06-27T19:49:29.931640
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/AS1C05_019T04_9000004074_28236cztM0_level2.evt modeM0/AS1C05_019T04_9000004074_28236cztM0_level2_quad_clean.evt
Size (bytes)488,479,68084,251,520
Size465.9 MB 80.3 MB
Events in quadrant A3,121,286527,438
Events in quadrant B3,262,494537,914
Events in quadrant C3,666,008518,857
Events in quadrant D4,296,633507,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137300
B0141700
C0154340
D0175200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6586450.683268%
B6586610.926207%
C65861552.353477%
D65861742.641968%

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 7666 6586 5 5 0.07% 0.08%
B 7666 6586 8 8 0.10% 0.12%
C 7666 6586 17 17 0.22% 0.26%
D 7666 6586 114 114 1.49% 1.73%

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 8 192 14475 84.92 804 787 161.2
A 13 254 11211 64.67 804 787 161.2
A 3 137 7704 42.91 804 787 161.2
B 0 230 49878 321.35 801 780 152.8
B 4 200 35672 228.37 801 780 152.8
B 12 111 18815 118.04 801 780 152.8
C 3 233 482804 2645.08 782 785 182.2
C 14 238 128206 699.22 782 785 182.2
C 9 221 9979 50.45 782 785 182.2
D 1 52 685199 3677.78 784 763 186.1
D 8 195 471165 2527.68 784 763 186.1
D 5 222 89625 477.49 784 763 186.1

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