ASTROSAT CZTI

Data Quality Report

Orbit 14867

Creation date: 2024-06-27T17:00:39.771165
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/AS1A04_218T01_9000002194_14867cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14867cztM0_level2_quad_clean.evt
Size (bytes)516,579,840109,512,000
Size492.6 MB 104.4 MB
Events in quadrant A3,396,673734,436
Events in quadrant B3,632,715724,453
Events in quadrant C3,342,617710,884
Events in quadrant D4,826,328687,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139922
B0149831
C0138851
D0186751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6583981.488683%
B65831031.564636%
C6583570.865867%
D65832133.235607%

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 7609 6585 6 6 0.08% 0.09%
B 7609 6585 7 7 0.09% 0.11%
C 7609 6585 2 2 0.03% 0.03%
D 7609 6585 137 137 1.80% 2.08%

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 12 189 51489 298.02 843 827 170.0
A 15 239 51093 295.69 843 827 170.0
A 4 2 40065 230.81 843 827 170.0
B 0 219 157358 1000.19 827 809 156.5
B 0 189 54032 340.04 827 809 156.5
B 5 236 31064 193.3 827 809 156.5
C 3 233 210972 1137.48 801 805 184.8
C 0 207 10173 50.7 801 805 184.8
C 13 61 5765 26.84 801 805 184.8
D 7 254 978025 4730.75 807 788 206.6
D 13 104 515897 2493.61 807 788 206.6
D 7 38 168773 813.2 807 788 206.6

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