ASTROSAT CZTI

Data Quality Report

Orbit 18224

Creation date: 2024-06-27T17:47:00.587340
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/AS1C04_001T01_9000002716_18224cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18224cztM0_level2_quad_clean.evt
Size (bytes)454,564,800127,365,120
Size433.5 MB 121.5 MB
Events in quadrant A3,173,295888,771
Events in quadrant B3,007,493890,742
Events in quadrant C2,909,410836,519
Events in quadrant D4,262,555816,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130531
B0126081
C0123961
D0165962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6092530.869993%
B6093370.607254%
C6093460.754965%
D60922844.661852%

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 7432 6092 13 13 0.17% 0.21%
B 7433 6093 2 2 0.03% 0.03%
C 7433 6093 0 0 0.00% 0.00%
D 7432 6092 257 257 3.46% 4.22%

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 15 174 199067 1302.92 769 756 152.2
A 13 210 8846 53.15 769 756 152.2
A 0 226 6882 40.25 769 756 152.2
B 7 220 26689 184.64 756 737 140.6
B 0 197 24587 169.69 756 737 140.6
B 12 111 15663 106.19 756 737 140.6
C 14 238 114961 696.34 716 721 164.1
C 13 61 5226 27.46 716 721 164.1
C 3 233 2107 8.45 716 721 164.1
D 1 52 1147701 6537.6 729 707 175.4
D 5 222 188628 1071.11 729 707 175.4
D 7 238 91256 516.11 729 707 175.4

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