ASTROSAT CZTI

Data Quality Report

Orbit 12653

Creation date: 2024-06-27T16:30:34.856183
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/AS1A04_174T01_9000001876_12653cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12653cztM0_level2_quad_clean.evt
Size (bytes)542,505,60098,297,280
Size517.4 MB 93.7 MB
Events in quadrant A3,197,661645,253
Events in quadrant B4,034,097639,006
Events in quadrant C3,169,046644,926
Events in quadrant D5,567,973573,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140103
B0163392
C0138952
D0212342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6800210.308824%
B68001922.823529%
C680090.132353%
D68004726.941176%

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 7661 6802 3 3 0.04% 0.04%
B 7661 6801 96 96 1.25% 1.41%
C 7661 6802 0 0 0.00% 0.00%
D 7661 6802 506 506 6.60% 7.44%

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 9 143 20430 117.29 820 804 167.3
A 8 192 7945 42.67 820 804 167.3
A 12 189 7575 40.46 820 804 167.3
B 4 239 483733 3092.03 819 801 156.2
B 3 64 151968 967.87 819 801 156.2
B 11 51 74536 472.1 819 801 156.2
C 15 208 39420 207.59 802 811 186.0
C 13 61 5853 27.11 802 811 186.0
C 14 234 4080 17.58 802 811 186.0
D 1 52 2056546 10961.77 768 746 187.5
D 10 157 472025 2512.92 768 746 187.5
D 10 199 45878 240.65 768 746 187.5

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