ASTROSAT CZTI

Data Quality Report

Orbit 32117

Creation date: 2024-06-27T20:36:38.911536
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/AS1T04_051T01_9000004686_32117cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32117cztM0_level2_quad_clean.evt
Size (bytes)645,687,36088,007,040
Size615.8 MB 83.9 MB
Events in quadrant A3,099,739588,312
Events in quadrant B6,279,465555,692
Events in quadrant C3,403,595565,382
Events in quadrant D6,341,694511,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131302
B0229763
C0139432
D0231172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6360170.267296%
B63594436.966504%
C63591782.799182%
D6359106216.700739%

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 7485 6361 0 0 0.00% 0.00%
B 7484 6360 259 259 3.46% 4.07%
C 7484 6360 70 70 0.94% 1.10%
D 7484 6360 953 953 12.73% 14.98%

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 13 6 15720 94.12 799 783 158.7
A 13 254 12727 75.26 799 783 158.7
A 3 137 7733 43.79 799 783 158.7
B 6 159 1760906 12101.37 769 753 145.5
B 10 245 1242360 8536.27 769 753 145.5
B 0 190 85812 584.8 769 753 145.5
C 0 10 281780 1587.92 757 763 177.0
C 14 238 126658 711.38 757 763 177.0
C 4 175 15728 84.56 757 763 177.0
D 2 250 2749815 16211.3 710 690 169.6
D 8 195 848023 4996.63 710 690 169.6
D 2 234 36084 208.71 710 690 169.6

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