ASTROSAT CZTI

Data Quality Report

Orbit 28559

Creation date: 2024-06-27T19:53:20.570108
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_102T07_9000004102_28559cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28559cztM0_level2_quad_clean.evt
Size (bytes)516,873,600111,968,640
Size492.9 MB 106.8 MB
Events in quadrant A3,720,230771,144
Events in quadrant B3,414,737777,409
Events in quadrant C3,215,081717,634
Events in quadrant D4,893,464702,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150521
B0140411
C0132761
D0186321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60501592.628099%
B60511342.214510%
C60511392.297141%
D60502323.834711%

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 7326 6050 46 46 0.63% 0.76%
B 7327 6051 3 3 0.04% 0.05%
C 7327 6051 0 0 0.00% 0.00%
D 7326 6050 169 169 2.31% 2.79%

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 461337 2750.1 844 831 167.5
A 13 254 10502 57.75 844 831 167.5
A 3 137 7421 39.35 844 831 167.5
B 4 171 89019 563.55 828 811 156.5
B 10 245 36736 229.52 828 811 156.5
B 15 33 18305 111.77 828 811 156.5
C 14 238 129394 707.89 782 787 181.7
C 7 247 32711 175.72 782 787 181.7
C 3 233 5450 25.67 782 787 181.7
D 8 195 1303557 6878.04 801 783 189.4
D 1 52 372036 1960.04 801 783 189.4
D 13 104 73943 386.25 801 783 189.4

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