ASTROSAT CZTI

Data Quality Report

Orbit 27787

Creation date: 2024-06-27T19:44:24.454360
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/AS1A10_016T01_9000004016_27787cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27787cztM0_level2_quad_clean.evt
Size (bytes)494,444,16078,307,200
Size471.5 MB 74.7 MB
Events in quadrant A2,990,213495,240
Events in quadrant B3,291,453503,783
Events in quadrant C3,282,300479,735
Events in quadrant D4,991,792461,621

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126640
B0134840
C0134730
D0190120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168460.745785%
B6169661.069865%
C6169891.442697%
D61693275.300697%

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 7163 6168 0 0 0.00% 0.00%
B 7164 6169 13 13 0.18% 0.21%
C 7164 6169 2 2 0.03% 0.03%
D 7164 6169 254 254 3.55% 4.12%

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 13 254 10514 62.7 775 759 155.6
A 3 137 7285 41.94 775 759 155.6
A 0 226 6751 38.51 775 759 155.6
B 3 64 184039 1248.8 764 747 146.8
B 10 245 48480 325.21 764 747 146.8
B 0 190 19441 127.37 764 747 146.8
C 3 233 266599 1532.12 742 749 173.5
C 14 238 117133 670.73 742 749 173.5
C 10 22 6575 33.58 742 749 173.5
D 1 52 1567003 8834.06 740 719 177.3
D 13 104 289016 1626.03 740 719 177.3
D 2 250 145804 818.3 740 719 177.3

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