ASTROSAT CZTI

Data Quality Report

Orbit 31147

Creation date: 2024-06-27T20:24:04.379898
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/AS1C06_002T01_9000004500_31147cztM0_level2.evt modeM0/AS1C06_002T01_9000004500_31147cztM0_level2_quad_clean.evt
Size (bytes)508,227,84086,682,240
Size484.7 MB 82.7 MB
Events in quadrant A2,545,926593,327
Events in quadrant B4,182,057580,658
Events in quadrant C2,746,622560,562
Events in quadrant D5,567,168528,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109271
B0160302
C0112581
D0204331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5168781.509288%
B51671232.380492%
C51671773.425585%
D51674979.618734%

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 6188 5169 0 0 0.00% 0.00%
B 6187 5168 3 3 0.05% 0.06%
C 6187 5168 14 14 0.23% 0.27%
D 6187 5168 410 410 6.63% 7.93%

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 12 96 40722 306.45 648 635 130.8
A 13 254 10499 75.41 648 635 130.8
A 3 137 6070 41.55 648 635 130.8
B 6 159 1436808 12096.57 631 615 118.7
B 0 183 102638 859.31 631 615 118.7
B 0 190 63878 532.84 631 615 118.7
C 14 238 115712 807.48 609 613 142.5
C 3 233 88240 614.75 609 613 142.5
C 0 10 69043 480.07 609 613 142.5
D 8 195 2551850 16280.45 604 593 156.7
D 13 174 499092 3181.09 604 593 156.7
D 13 249 105167 667.32 604 593 156.7

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