ASTROSAT CZTI

Data Quality Report

Orbit 18921

Creation date: 2024-06-27T17:56:35.177094
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_163T01_9000002820_18921cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18921cztM0_level2_quad_clean.evt
Size (bytes)557,752,32084,386,880
Size531.9 MB 80.5 MB
Events in quadrant A3,494,268527,391
Events in quadrant B4,128,522538,043
Events in quadrant C3,910,017524,031
Events in quadrant D4,878,671472,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148072
B0166142
C0158682
D0192172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70821582.231008%
B70832143.021319%
C70831662.343640%
D70836328.922773%

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 7667 7084 13 13 0.17% 0.18%
B 7668 7085 36 36 0.47% 0.51%
C 7668 7085 0 0 0.00% 0.00%
D 7668 7085 429 429 5.59% 6.06%

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 86381 477.12 883 865 179.2
A 13 254 9549 48.45 883 865 179.2
A 9 143 9524 48.31 883 865 179.2
B 3 112 335013 1969.77 875 853 169.6
B 10 247 162079 950.38 875 853 169.6
B 7 220 83629 487.94 875 853 169.6
C 3 233 484757 2454.81 842 847 197.1
C 14 238 131277 661.65 842 847 197.1
C 0 207 6643 29.4 842 847 197.1
D 7 238 1448827 7194.3 826 802 201.3
D 9 1 135939 671.41 826 802 201.3
D 14 34 49233 240.62 826 802 201.3

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