ASTROSAT CZTI

Data Quality Report

Orbit 30504

Creation date: 2024-06-27T20:16:10.938605
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/AS1C05_019T04_9000004388_30504cztM0_level2.evt modeM0/AS1C05_019T04_9000004388_30504cztM0_level2_quad_clean.evt
Size (bytes)649,480,320128,206,080
Size619.4 MB 122.3 MB
Events in quadrant A3,696,210859,143
Events in quadrant B6,232,228851,772
Events in quadrant C4,245,572826,061
Events in quadrant D4,968,324804,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164042
B0243672
C0177402
D0201452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7798801.025904%
B77992603.333761%
C77992613.346583%
D77992513.218361%

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 8303 7800 5 5 0.06% 0.06%
B 8304 7801 23 23 0.28% 0.29%
C 8304 7801 59 59 0.71% 0.76%
D 8304 7801 158 158 1.90% 2.03%

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 12 96 41269 213.66 935 917 188.9
A 8 192 27561 141.08 935 917 188.9
A 13 254 14689 72.92 935 917 188.9
B 6 159 2292938 12828.29 927 901 178.7
B 0 229 179310 998.54 927 901 178.7
B 5 172 51967 285.81 927 901 178.7
C 10 22 373192 1767.43 899 901 210.6
C 3 233 176996 836.0 899 901 210.6
C 14 238 151002 712.59 899 901 210.6
D 8 195 638676 3004.66 898 873 212.3
D 2 250 560691 2637.28 898 873 212.3
D 10 253 69865 325.02 898 873 212.3

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