ASTROSAT CZTI

Data Quality Report

Orbit 20787

Creation date: 2024-06-27T18:19:35.819541
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_013T01_9000003070_20787cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20787cztM0_level2_quad_clean.evt
Size (bytes)571,003,20097,701,120
Size544.6 MB 93.2 MB
Events in quadrant A3,025,739671,469
Events in quadrant B3,764,461646,110
Events in quadrant C2,972,183632,952
Events in quadrant D7,119,148584,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126941
B0151061
C0126161
D0254212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6071771.268325%
B60721802.964427%
C6072841.383399%
D6071113618.711909%

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 7261 6071 0 0 0.00% 0.00%
B 7262 6073 79 79 1.09% 1.30%
C 7262 6073 0 0 0.00% 0.00%
D 7261 6071 926 926 12.75% 15.25%

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 0 226 7074 39.99 786 772 157.6
A 3 137 5924 32.7 786 772 157.6
A 12 194 5846 32.2 786 772 157.6
B 7 220 378918 2620.72 760 743 144.3
B 0 182 259215 1791.19 760 743 144.3
B 3 64 39003 265.14 760 743 144.3
C 14 238 116607 682.64 731 738 169.7
C 13 61 5274 26.72 731 738 169.7
C 7 247 4143 20.06 731 738 169.7
D 1 52 2691861 16239.54 689 671 165.7
D 1 20 1022137 6163.87 689 671 165.7
D 12 227 586554 3535.41 689 671 165.7

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