ASTROSAT CZTI

Data Quality Report

Orbit 05055

Creation date: 2024-06-27T14:50:44.017061
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/AS1G05_218T04_9000000640_05055cztM0_level2.evt modeM0/AS1G05_218T04_9000000640_05055cztM0_level2_quad_clean.evt
Size (bytes)645,151,68065,603,520
Size615.3 MB 62.6 MB
Events in quadrant A3,832,728380,935
Events in quadrant B3,764,882379,265
Events in quadrant C4,414,693371,700
Events in quadrant D7,014,228328,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164633
B0162092
C0181242
D0260362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75592393.161794%
B75591832.420955%
C75591582.090224%
D7559117915.597301%

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 8584 7561 67 67 0.78% 0.89%
B 8584 7561 9 9 0.10% 0.12%
C 8584 7561 1 1 0.01% 0.01%
D 8584 7561 862 862 10.04% 11.40%

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 210308 1135.14 901 882 184.5
A 13 251 129755 698.52 901 882 184.5
A 15 234 19832 102.71 901 882 184.5
B 0 219 80163 448.76 909 888 176.7
B 15 54 71626 400.43 909 888 176.7
B 15 204 40527 224.39 909 888 176.7
C 1 16 979355 4810.81 872 876 203.4
C 14 67 22742 107.51 872 876 203.4
C 13 61 7157 30.88 872 876 203.4
D 13 235 3508703 16933.82 836 810 207.2
D 7 237 193024 927.88 836 810 207.2
D 2 14 32860 154.72 836 810 207.2

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