ASTROSAT CZTI

Data Quality Report

Orbit 15880

Creation date: 2024-06-27T17:14:42.428978
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_143T01_9000002344_15880cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15880cztM0_level2_quad_clean.evt
Size (bytes)457,611,84092,263,680
Size436.4 MB 88.0 MB
Events in quadrant A3,403,824588,811
Events in quadrant B3,216,910612,052
Events in quadrant C3,228,755580,588
Events in quadrant D3,573,745565,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142953
B0136252
C0136422
D0151342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64091011.575909%
B6409651.014199%
C6409510.795756%
D64092043.183024%

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 7535 6411 39 39 0.52% 0.61%
B 7535 6411 3 3 0.04% 0.05%
C 7535 6411 2 2 0.03% 0.03%
D 7535 6411 144 144 1.91% 2.25%

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 15 239 182133 1134.64 796 781 159.8
A 15 157 146047 908.87 796 781 159.8
A 9 143 14499 85.83 796 781 159.8
B 4 173 36674 234.1 808 788 153.3
B 12 111 17685 110.23 808 788 153.3
B 11 111 15185 93.92 808 788 153.3
C 14 238 118140 643.19 776 783 182.5
C 0 207 30592 163.37 776 783 182.5
C 10 22 21859 115.51 776 783 182.5
D 13 172 367845 1955.54 767 745 187.7
D 1 52 283677 1507.18 767 745 187.7
D 2 234 22086 113.68 767 745 187.7

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