ASTROSAT CZTI

Data Quality Report

Orbit 13295

Creation date: 2024-06-27T16:38:55.286682
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/AS1T02_013T01_9000001976_13295cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13295cztM0_level2_quad_clean.evt
Size (bytes)1,423,065,600149,434,560
Size1.3 GB 142.5 MB
Events in quadrant A7,303,0331,126,911
Events in quadrant B16,803,961391,239
Events in quadrant C6,127,2081,136,770
Events in quadrant D11,992,248976,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297774
B0585033
C0265383
D0439553

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128941391.078021%
B12894764359.275632%
C12894610.473088%
D12894164512.757872%

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 14140 12897 15 15 0.11% 0.12%
B 14139 12896 3322 3322 23.50% 25.76%
C 14140 12897 5 5 0.04% 0.04%
D 14140 12897 1390 1390 9.83% 10.78%

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 8 15 1120812 3471.18 1571 1538 322.4
A 9 143 46266 138.71 1571 1538 322.4
A 1 162 41128 122.78 1571 1538 322.4
B 4 239 13386609 82378.18 842 820 162.5
B 0 214 25436 151.49 842 820 162.5
B 3 64 23788 141.35 842 820 162.5
C 15 208 134449 372.86 1535 1548 356.4
C 14 234 11138 26.9 1535 1548 356.4
C 13 61 11066 26.7 1535 1548 356.4
D 5 222 2742819 7748.32 1455 1415 353.8
D 1 52 1543502 4358.56 1455 1415 353.8
D 12 222 936546 2643.06 1455 1415 353.8

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