ASTROSAT CZTI

Data Quality Report

Orbit 22753

Creation date: 2024-06-27T18:45:11.844748
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/AS1A08_007T01_9000003362_22753cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22753cztM0_level2_quad_clean.evt
Size (bytes)495,734,400108,501,120
Size472.8 MB 103.5 MB
Events in quadrant A3,264,066725,861
Events in quadrant B3,343,179738,830
Events in quadrant C3,346,924706,583
Events in quadrant D4,644,161687,654

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133931
B0136061
C0137711
D0178521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6112641.047120%
B6113550.899722%
C61131111.815802%
D61133525.758220%

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 7402 6113 0 0 0.00% 0.00%
B 7403 6114 2 2 0.03% 0.03%
C 7403 6114 0 0 0.00% 0.00%
D 7403 6114 228 228 3.08% 3.73%

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 10761 59.98 846 830 165.6
A 0 226 7536 40.5 846 830 165.6
A 3 137 6333 33.24 846 830 165.6
B 0 228 31785 202.66 835 817 152.8
B 0 230 17152 106.9 835 817 152.8
B 12 111 16848 104.91 835 817 152.8
C 14 238 130858 691.51 820 828 188.0
C 2 16 9813 47.78 820 828 188.0
C 10 22 8776 42.27 820 828 188.0
D 1 52 1179591 6035.11 822 800 195.3
D 2 152 120816 614.45 822 800 195.3
D 10 230 82671 419.16 822 800 195.3

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