ASTROSAT CZTI

Data Quality Report

Orbit 38766

Creation date: 2024-06-27T21:56:08.719930
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/AS1A12_051T01_9000005394_38766cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38766cztM0_level2_quad_clean.evt
Size (bytes)555,125,760169,914,240
Size529.4 MB 162.0 MB
Events in quadrant A4,911,1631,150,198
Events in quadrant B4,454,1711,207,325
Events in quadrant C4,912,6551,130,173
Events in quadrant D5,547,2711,011,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199644
B0189523
C0196923
D0228843

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9322170.182364%
B9322100.107273%
C9322530.568548%
D93222292.456554%

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 13478 9324 11 11 0.08% 0.12%
B 13478 9324 2 2 0.01% 0.02%
C 13478 9324 34 34 0.25% 0.36%
D 13478 9324 201 201 1.49% 2.16%

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 10 83 647151 2973.19 1089 1070 217.3
A 13 248 36388 162.53 1089 1070 217.3
A 13 254 13234 55.98 1089 1070 217.3
B 4 171 45708 217.41 1100 1072 205.3
B 4 251 32109 151.17 1100 1072 205.3
B 0 230 28767 134.9 1100 1072 205.3
C 15 214 410557 1631.99 1086 1094 250.9
C 14 254 96319 379.54 1086 1094 250.9
C 0 239 57937 226.56 1086 1094 250.9
D 5 222 640215 2501.93 1059 1031 255.5
D 10 118 395675 1544.74 1059 1031 255.5
D 13 249 191303 744.77 1059 1031 255.5

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