ASTROSAT CZTI

Data Quality Report

Orbit 21553

Creation date: 2024-06-27T18:29:11.634694
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/AS1A05_166T01_9000003192_21553cztM0_level2.evt modeM0/AS1A05_166T01_9000003192_21553cztM0_level2_quad_clean.evt
Size (bytes)508,608,00099,466,560
Size485.0 MB 94.9 MB
Events in quadrant A3,285,968655,670
Events in quadrant B3,477,980662,993
Events in quadrant C3,405,779651,264
Events in quadrant D4,822,993619,636

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133121
B0140021
C0140491
D0182851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60511031.702198%
B60521362.247191%
C60521642.709848%
D60523205.287508%

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 7386 6052 0 0 0.00% 0.00%
B 7387 6053 7 7 0.09% 0.12%
C 7387 6053 0 0 0.00% 0.00%
D 7387 6053 161 161 2.18% 2.66%

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 9452 51.68 853 837 166.7
A 0 226 7411 39.44 853 837 166.7
A 3 137 6258 32.52 853 837 166.7
B 3 64 55082 350.7 846 831 154.7
B 0 228 50947 323.97 846 831 154.7
B 0 190 34256 216.07 846 831 154.7
C 14 238 135890 720.31 825 836 187.5
C 3 233 53719 282.05 825 836 187.5
C 13 61 5927 27.15 825 836 187.5
D 1 52 1030828 5213.88 832 811 197.6
D 2 136 322412 1627.92 832 811 197.6
D 7 223 86630 434.41 832 811 197.6

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