ASTROSAT CZTI

Data Quality Report

Orbit 20844

Creation date: 2024-06-27T18:20:17.032611
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/AS1C04_001T01_9000003074_20844cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20844cztM0_level2_quad_clean.evt
Size (bytes)476,533,440131,667,840
Size454.5 MB 125.6 MB
Events in quadrant A3,330,546924,431
Events in quadrant B3,613,204910,977
Events in quadrant C3,155,093858,154
Events in quadrant D3,912,451862,009

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135692
B0145022
C0130202
D0154722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61931021.647021%
B61931392.244470%
C61931242.002261%
D61931412.276764%

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 7523 6193 0 0 0.00% 0.00%
B 7522 6192 25 25 0.33% 0.40%
C 7523 6193 0 0 0.00% 0.00%
D 7523 6193 79 79 1.05% 1.28%

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 2 79 121237 731.21 832 817 164.7
A 8 205 10727 60.18 832 817 164.7
A 0 226 7576 41.04 832 817 164.7
B 7 220 174087 1163.02 812 793 149.0
B 0 189 173891 1161.71 812 793 149.0
B 0 229 18314 117.59 812 793 149.0
C 14 238 126282 717.13 771 774 175.0
C 3 233 13811 74.49 771 774 175.0
C 9 54 7018 35.68 771 774 175.0
D 7 38 457862 2385.25 800 780 191.6
D 1 52 178740 928.67 800 780 191.6
D 9 1 75904 392.03 800 780 191.6

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