ASTROSAT CZTI

Data Quality Report

Orbit 18564

Creation date: 2024-06-27T17:51:44.051301
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/AS1A05_167T01_9000002758_18564cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18564cztM0_level2_quad_clean.evt
Size (bytes)522,221,76087,759,360
Size498.0 MB 83.7 MB
Events in quadrant A3,578,538535,230
Events in quadrant B3,637,919559,535
Events in quadrant C3,513,157538,182
Events in quadrant D4,598,635524,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151842
B0153452
C0149372
D0183192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71742022.815723%
B71741932.690270%
C71731321.840234%
D71732874.001115%

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 8395 7175 3 3 0.04% 0.04%
B 8395 7175 77 77 0.92% 1.07%
C 8394 7174 11 11 0.13% 0.15%
D 8394 7174 157 157 1.87% 2.19%

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 14 111 246111 1406.44 862 840 174.4
A 13 254 10857 57.44 862 840 174.4
A 0 226 7575 38.62 862 840 174.4
B 0 229 174582 1038.94 858 835 167.2
B 7 220 94503 560.1 858 835 167.2
B 12 111 20385 116.9 858 835 167.2
C 4 254 139998 707.3 829 833 196.8
C 14 238 127564 644.11 829 833 196.8
C 9 54 13765 65.73 829 833 196.8
D 1 52 848319 4152.76 835 810 204.1
D 7 238 503248 2461.93 835 810 204.1
D 7 38 43813 210.71 835 810 204.1

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