ASTROSAT CZTI

Data Quality Report

Orbit 24449

Creation date: 2024-06-27T19:06:08.152724
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/AS1T03_183T01_9000003606_24449cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24449cztM0_level2_quad_clean.evt
Size (bytes)467,628,480119,517,120
Size446.0 MB 114.0 MB
Events in quadrant A3,175,665805,507
Events in quadrant B3,267,288835,076
Events in quadrant C3,357,005778,667
Events in quadrant D3,915,620742,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137652
B0138612
C0142083
D0161452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580240.364742%
B6580410.623100%
C6579661.003192%
D65791301.975984%

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 7845 6581 2 2 0.03% 0.03%
B 7845 6581 4 4 0.05% 0.06%
C 7844 6580 6 6 0.08% 0.09%
D 7844 6580 104 104 1.33% 1.58%

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 4 2 63612 392.11 807 793 160.2
A 13 254 10586 61.13 807 793 160.2
A 3 137 7108 39.42 807 793 160.2
B 4 81 24799 156.96 818 798 152.9
B 7 202 21144 133.06 818 798 152.9
B 12 111 17956 112.21 818 798 152.9
C 2 16 178245 977.1 780 785 181.6
C 14 238 125465 686.49 780 785 181.6
C 3 233 12424 64.08 780 785 181.6
D 12 218 423029 2292.36 769 747 184.2
D 1 52 297130 1608.92 769 747 184.2
D 13 174 189504 1024.67 769 747 184.2

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