ASTROSAT CZTI

Data Quality Report

Orbit 21764

Creation date: 2024-06-27T18:31:54.946555
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_005T01_9000003224_21764cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21764cztM0_level2_quad_clean.evt
Size (bytes)2,859,272,640282,070,080
Size2.7 GB 269.0 MB
Events in quadrant A11,957,9891,856,271
Events in quadrant B13,147,9421,895,359
Events in quadrant C11,821,7931,808,269
Events in quadrant D47,995,5171,271,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512455
B0542355
C0508285
D01596125

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A248353701.489833%
B248355232.105899%
C248354331.743507%
D248341481559.656117%

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 27525 24839 2 2 0.01% 0.01%
B 27525 24840 95 95 0.35% 0.38%
C 27525 24841 0 0 0.00% 0.00%
D 27524 24837 12484 12484 45.36% 50.26%

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 14 235 87615 138.89 3030 2957 609.5
A 15 236 75825 119.55 3030 2957 609.5
A 12 96 55934 86.91 3030 2957 609.5
B 3 64 591061 1020.25 3028 2951 576.4
B 0 230 303819 521.94 3028 2951 576.4
B 0 190 135379 229.74 3028 2951 576.4
C 14 238 453366 660.89 2914 2930 681.6
C 13 61 20344 25.55 2914 2930 681.6
C 3 233 16220 19.5 2914 2930 681.6
D 7 238 32227601 59987.31 2211 2146 537.2
D 1 52 6149061 11442.41 2211 2146 537.2
D 2 136 363764 673.15 2211 2146 537.2

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