ASTROSAT CZTI

Data Quality Report

Orbit 48476

Creation date: 2024-09-14T12:34:39.834788
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/AS1A13_081T01_9000006428_48476cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48476cztM0_level2_quad_clean.evt
Size (bytes)475,896,96096,940,800
Size453.9 MB 92.4 MB
Events in quadrant A6,225,718651,537
Events in quadrant B3,004,053677,186
Events in quadrant C2,565,246653,843
Events in quadrant D5,344,362523,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231361
B0134921
C0124801
D0203301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61401933.143322%
B61391712.785470%
C6139250.407232%
D614079412.931596%

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 7270 6140 19 19 0.26% 0.31%
B 7269 6139 93 93 1.28% 1.51%
C 7269 6140 2 2 0.03% 0.03%
D 7270 6141 741 741 10.19% 12.07%

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 10 83 3662440 26811.83 658 645 136.6
A 13 254 11262 77.74 658 645 136.6
A 10 255 10796 74.33 658 645 136.6
B 0 186 296085 2290.43 660 638 129.0
B 12 16 50861 389.35 660 638 129.0
B 8 234 33388 253.89 660 638 129.0
C 12 2 22451 144.36 647 648 151.0
C 14 67 7247 43.69 647 648 151.0
C 14 254 6150 36.43 647 648 151.0
D 2 165 1520368 10207.41 603 584 148.9
D 7 38 1419691 9531.23 603 584 148.9
D 2 249 29465 193.98 603 584 148.9

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