ASTROSAT CZTI

Data Quality Report

Orbit 10939

Creation date: 2024-06-27T16:05:57.841137
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/AS1C03_013T01_9000001586_10939cztM0_level2.evt modeM0/AS1C03_013T01_9000001586_10939cztM0_level2_quad_clean.evt
Size (bytes)479,240,64076,605,120
Size457.0 MB 73.1 MB
Events in quadrant A2,982,274493,976
Events in quadrant B3,943,789489,515
Events in quadrant C2,788,428493,445
Events in quadrant D4,397,019428,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012818196
B015836278
C012480180
D017244223

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01222
B01211
C01222
D01222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5924631.063471%
B59253205.400844%
C5925300.506329%
D592264310.857818%

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 7152 5943 12 12 0.17% 0.20%
B 7152 5940 205 205 2.87% 3.45%
C 7152 5942 4 4 0.06% 0.07%
D 7152 5937 552 552 7.72% 9.30%

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 8 5 97318 662.93 712 699 145.7
A 15 174 57226 387.85 712 699 145.7
A 15 223 39644 267.21 712 699 145.7
B 4 239 1091025 8142.23 696 680 133.9
B 0 219 46077 339.01 696 680 133.9
B 0 187 32094 234.59 696 680 133.9
C 14 234 115158 720.68 684 689 158.8
C 13 61 5149 28.08 684 689 158.8
C 8 222 2697 12.64 684 689 158.8
D 1 52 1715294 10821.87 652 634 158.4
D 13 104 53003 330.52 652 634 158.4
D 13 249 40540 251.86 652 634 158.4

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