ASTROSAT CZTI

Data Quality Report

Orbit 16832

Creation date: 2024-06-27T17:28:22.356287
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_056T01_9000002498_16832cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16832cztM0_level2_quad_clean.evt
Size (bytes)562,334,40073,143,360
Size536.3 MB 69.8 MB
Events in quadrant A3,278,870456,263
Events in quadrant B3,543,672467,098
Events in quadrant C4,291,592439,178
Events in quadrant D5,495,078417,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135663
B0144382
C0170232
D0206192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217811.302879%
B62171001.608493%
C62172333.747788%
D62174457.157793%

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 7458 6219 3 3 0.04% 0.05%
B 7458 6219 4 4 0.05% 0.06%
C 7458 6219 45 45 0.60% 0.72%
D 7458 6219 314 314 4.21% 5.05%

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 9 143 48921 288.27 839 823 166.9
A 13 228 8007 43.06 839 823 166.9
A 0 226 7384 39.32 839 823 166.9
B 0 229 210562 1343.42 838 819 156.1
B 4 173 26059 161.66 838 819 156.1
B 15 35 22408 138.28 838 819 156.1
C 3 233 964982 5141.74 814 823 187.5
C 14 238 125944 667.25 814 823 187.5
C 0 207 28678 148.55 814 823 187.5
D 1 52 1700750 8692.83 806 786 195.6
D 5 222 707812 3615.41 806 786 195.6
D 2 136 33396 166.75 806 786 195.6

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