ASTROSAT CZTI

Data Quality Report

Orbit 26358

Creation date: 2024-06-27T19:27:50.589845
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/AS1A09_088T01_9000003808_26358cztM0_level2.evt modeM0/AS1A09_088T01_9000003808_26358cztM0_level2_quad_clean.evt
Size (bytes)557,510,400125,141,760
Size531.7 MB 119.3 MB
Events in quadrant A3,345,737855,352
Events in quadrant B3,471,782884,931
Events in quadrant C3,465,570836,601
Events in quadrant D6,180,657780,115

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139160
B0141850
C0141220
D0225880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215530.852776%
B62151342.156074%
C6216801.287001%
D621676812.355212%

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 7580 6216 8 8 0.11% 0.13%
B 7580 6216 34 34 0.45% 0.55%
C 7581 6217 1 1 0.01% 0.02%
D 7581 6217 609 609 8.03% 9.80%

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 0 13 124978 752.35 834 819 165.0
A 13 254 11144 62.57 834 819 165.0
A 0 226 7167 38.47 834 819 165.0
B 5 172 182024 1180.47 836 818 153.5
B 0 230 33863 215.27 836 818 153.5
B 12 111 17258 107.1 836 818 153.5
C 3 233 147153 792.18 809 818 184.7
C 14 238 132959 715.34 809 818 184.7
C 2 16 29349 154.45 809 818 184.7
D 7 80 2644107 14536.99 774 756 181.8
D 1 52 522561 2869.64 774 756 181.8
D 8 195 35255 189.73 774 756 181.8

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