ASTROSAT CZTI

Data Quality Report

Orbit 04286

Creation date: 2024-06-27T14:39:55.447119
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/AS1G05_256T01_9000000538_04286cztM0_level2.evt modeM0/AS1G05_256T01_9000000538_04286cztM0_level2_quad_clean.evt
Size (bytes)479,787,84078,376,320
Size457.6 MB 74.7 MB
Events in quadrant A2,704,403534,325
Events in quadrant B3,918,544498,827
Events in quadrant C2,202,082513,838
Events in quadrant D5,358,082467,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115312
B0152681
C0104121
D0194861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51121282.503912%
B511251410.054773%
C5112521.017214%
D5112116722.828638%

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 6172 5113 39 39 0.63% 0.76%
B 6172 5112 364 364 5.90% 7.12%
C 6172 5112 3 3 0.05% 0.06%
D 6172 5113 800 800 12.96% 15.65%

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 0 50 246146 2111.67 573 561 116.3
A 8 15 129144 1105.62 573 561 116.3
A 0 199 80432 686.77 573 561 116.3
B 14 167 1595756 15000.31 559 545 106.3
B 10 16 102337 957.18 559 545 106.3
B 5 184 18970 173.26 559 545 106.3
C 15 224 13027 96.49 558 559 129.2
C 10 65 8640 62.54 558 559 129.2
C 13 61 4651 31.67 558 559 129.2
D 2 232 2716183 21847.05 520 504 124.3
D 2 63 468615 3765.85 520 504 124.3
D 2 136 87319 698.41 520 504 124.3

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