ASTROSAT CZTI

Data Quality Report

Orbit 16679

Creation date: 2024-06-27T17:26:02.274798
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/AS1A05_101T09_9000002466_16679cztM0_level2.evt modeM0/AS1A05_101T09_9000002466_16679cztM0_level2_quad_clean.evt
Size (bytes)765,138,240147,009,600
Size729.7 MB 140.2 MB
Events in quadrant A4,509,890997,883
Events in quadrant B4,356,3191,017,755
Events in quadrant C3,820,087975,751
Events in quadrant D9,931,087890,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191263
B0182862
C0169862
D0352222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82103163.848965%
B82102342.850183%
C82101742.119367%
D8210120114.628502%

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 8761 8213 150 150 1.71% 1.83%
B 8761 8213 24 24 0.27% 0.29%
C 8761 8213 0 0 0.00% 0.00%
D 8761 8213 848 848 9.68% 10.33%

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 749049 3912.73 952 930 191.2
A 12 96 47690 244.56 952 930 191.2
A 9 143 34160 173.8 952 930 191.2
B 15 35 226651 1222.33 963 937 184.7
B 0 229 137636 740.28 963 937 184.7
B 0 189 61555 328.27 963 937 184.7
C 14 238 140391 650.76 918 920 214.3
C 3 233 50097 229.46 918 920 214.3
C 7 247 33941 154.07 918 920 214.3
D 2 16 4646513 21615.39 888 860 214.9
D 1 52 1501692 6983.1 888 860 214.9
D 10 70 189344 876.98 888 860 214.9

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