ASTROSAT CZTI

Data Quality Report

Orbit 01182

Creation date: 2024-06-27T14:08:47.169752
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/AS1P01_997T02_9000000218_01182cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01182cztM0_level2_quad_clean.evt
Size (bytes)1,099,543,68068,333,760
Size1.0 GB 65.2 MB
Events in quadrant A5,795,284466,994
Events in quadrant B7,988,446411,411
Events in quadrant C5,547,716461,882
Events in quadrant D13,646,870385,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206960
B0273180
C0199630
D0441620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4882771.577222%
B488292618.967636%
C488230.061450%
D4882170034.821794%

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 4882 4882 201 201 4.12% 4.12%
B 4882 4882 1247 1247 25.54% 25.54%
C 4882 4882 81 81 1.66% 1.66%
D 4882 4882 4793 4793 98.18% 98.18%

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 4 32 287843 842.48 1420 1434 340.0
A 15 233 30192 84.59 1420 1434 340.0
A 8 14 16867 45.4 1420 1434 340.0
B 8 234 2802175 8725.19 1345 1354 321.0
B 5 191 35194 105.42 1345 1354 321.0
B 6 53 10767 29.32 1345 1354 321.0
C 15 241 269688 716.6 1343 1390 374.4
C 3 111 15556 37.84 1343 1390 374.4
C 3 79 10486 24.29 1343 1390 374.4
D 1 239 8555274 22509.57 1218 1261 380.0
D 10 84 486855 1277.82 1218 1261 380.0
D 10 85 23727 59.12 1218 1261 380.0

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