ASTROSAT CZTI

Data Quality Report

Orbit 21813

Creation date: 2024-06-27T18:32:33.141900
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/AS1A07_004T01_9000003230_21813cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21813cztM0_level2_quad_clean.evt
Size (bytes)446,483,52093,401,280
Size425.8 MB 89.1 MB
Events in quadrant A3,140,648609,345
Events in quadrant B3,434,641625,236
Events in quadrant C3,170,928596,689
Events in quadrant D3,353,698563,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131242
B0139342
C0130852
D0139392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212290.466838%
B62111121.803252%
C6211610.982128%
D6211600.966028%

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 7537 6213 0 0 0.00% 0.00%
B 7536 6212 31 31 0.41% 0.50%
C 7536 6212 0 0 0.00% 0.00%
D 7536 6212 34 34 0.45% 0.55%

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 13 254 12025 69.0 812 797 162.7
A 13 252 9365 52.66 812 797 162.7
A 0 226 7155 39.07 812 797 162.7
B 3 64 120789 788.88 818 802 152.1
B 0 230 30249 193.61 818 802 152.1
B 0 190 23266 147.69 818 802 152.1
C 14 238 124108 683.31 780 787 180.5
C 13 61 5570 26.5 780 787 180.5
C 0 10 5543 26.35 780 787 180.5
D 1 52 129117 678.74 776 753 189.1
D 13 104 85144 446.23 776 753 189.1
D 13 153 82087 430.06 776 753 189.1

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