ASTROSAT CZTI

Data Quality Report

Orbit 26126

Creation date: 2024-06-27T19:25:07.024776
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/AS1A09_138T04_9000003776_26126cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26126cztM0_level2_quad_clean.evt
Size (bytes)476,599,680113,408,640
Size454.5 MB 108.2 MB
Events in quadrant A3,508,815746,445
Events in quadrant B3,428,562779,677
Events in quadrant C3,686,046741,294
Events in quadrant D3,389,970734,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144020
B0140220
C0148940
D0139500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197330.532516%
B6196500.806972%
C61961502.420917%
D6196360.581020%

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 7567 6198 4 4 0.05% 0.06%
B 7566 6197 1 1 0.01% 0.02%
C 7566 6197 28 28 0.37% 0.45%
D 7566 6197 18 18 0.24% 0.29%

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 13 206144 1212.57 856 844 169.3
A 13 254 8069 42.67 856 844 169.3
A 0 226 7294 38.1 856 844 169.3
B 0 190 33162 203.77 858 841 158.6
B 0 229 21751 131.83 858 841 158.6
B 12 111 18227 109.61 858 841 158.6
C 3 233 140542 715.6 843 851 195.2
C 14 238 137026 697.59 843 851 195.2
C 2 16 119487 607.74 843 851 195.2
D 12 233 86424 422.93 855 838 202.4
D 1 52 57518 280.09 855 838 202.4
D 2 234 23168 110.35 855 838 202.4

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