ASTROSAT CZTI

Data Quality Report

Orbit 23759

Creation date: 2024-06-27T18:58:24.001616
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_007T01_9000003518_23759cztM0_level2.evt modeM0/AS1C05_007T01_9000003518_23759cztM0_level2_quad_clean.evt
Size (bytes)521,951,04085,098,240
Size497.8 MB 81.2 MB
Events in quadrant A3,197,211527,841
Events in quadrant B3,717,643537,624
Events in quadrant C3,288,111526,541
Events in quadrant D5,138,492506,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139911
B0153381
C0140601
D0199243

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68631221.777648%
B68642113.074009%
C68641452.112471%
D68632553.715576%

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 7218 6863 0 0 0.00% 0.00%
B 7219 6864 37 37 0.51% 0.54%
C 7219 6864 0 0 0.00% 0.00%
D 7218 6863 150 150 2.08% 2.19%

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 13 254 12271 67.9 828 809 168.8
A 3 137 7632 40.42 828 809 168.8
A 0 226 7164 37.65 828 809 168.8
B 3 64 229633 1434.72 820 801 159.5
B 14 207 117939 734.43 820 801 159.5
B 7 234 68460 424.2 820 801 159.5
C 14 238 125623 659.16 803 810 189.4
C 7 247 26433 135.32 803 810 189.4
C 13 61 5547 25.02 803 810 189.4
D 8 195 1158538 5847.5 809 786 198.0
D 1 52 885165 4466.77 809 786 198.0
D 2 234 29158 143.3 809 786 198.0

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