ASTROSAT CZTI

Data Quality Report

Orbit 30268

Creation date: 2024-06-27T20:12:55.107231
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/AS1A10_007T01_9000004350_30268cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30268cztM0_level2_quad_clean.evt
Size (bytes)863,591,040102,499,200
Size823.6 MB 97.8 MB
Events in quadrant A4,372,973709,789
Events in quadrant B13,613,168500,680
Events in quadrant C3,677,635720,910
Events in quadrant D4,036,337703,188

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172251
B0450375
C0148521
D0161591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67152173.231571%
B6714493373.473339%
C67141472.189455%
D67141362.025618%

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 8015 6716 111 111 1.38% 1.65%
B 8014 6714 3805 3805 47.48% 56.67%
C 8014 6714 0 0 0.00% 0.00%
D 8014 6715 83 83 1.04% 1.24%

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 14 239 890234 5000.6 896 883 177.8
A 8 192 22657 122.43 896 883 177.8
A 13 254 12598 65.87 896 883 177.8
B 6 36 9618803 77344.79 655 639 124.4
B 6 159 1415501 11377.66 655 639 124.4
B 12 111 14306 109.9 655 639 124.4
C 14 238 147282 714.78 884 893 204.8
C 3 233 67728 326.34 884 893 204.8
C 2 114 15894 73.25 884 893 204.8
D 5 222 365879 1709.63 875 856 213.5
D 8 195 285032 1330.97 875 856 213.5
D 2 250 33076 150.9 875 856 213.5

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