ASTROSAT CZTI

Data Quality Report

Orbit 16751

Creation date: 2024-06-27T17:27:12.971450
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_202T01_9000002484_16751cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16751cztM0_level2_quad_clean.evt
Size (bytes)666,305,280124,197,120
Size635.4 MB 118.4 MB
Events in quadrant A3,518,942840,819
Events in quadrant B3,808,717847,588
Events in quadrant C3,656,820812,775
Events in quadrant D8,687,920739,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156213
B0162342
C0157362
D0311322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7487460.614398%
B7487891.188727%
C7487580.774676%
D7487110114.705490%

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 7758 7489 22 22 0.28% 0.29%
B 7758 7489 15 15 0.19% 0.20%
C 7758 7489 4 4 0.05% 0.05%
D 7758 7489 878 878 11.32% 11.72%

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 15 174 116218 648.7 875 857 177.8
A 3 1 39507 217.34 875 857 177.8
A 0 226 7800 39.04 875 857 177.8
B 15 35 115882 692.74 880 857 166.0
B 7 220 54040 320.3 880 857 166.0
B 0 197 50213 297.25 880 857 166.0
C 3 233 166250 853.92 836 842 193.7
C 14 238 131075 672.33 836 842 193.7
C 0 207 94940 485.78 836 842 193.7
D 1 52 5230335 27275.19 798 776 191.7
D 2 16 175424 910.89 798 776 191.7
D 11 176 91502 473.19 798 776 191.7

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