ASTROSAT CZTI

Data Quality Report

Orbit 24239

Creation date: 2024-06-27T19:03:51.109948
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/AS1A07_118T01_9000003586_24239cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24239cztM0_level2_quad_clean.evt
Size (bytes)1,433,494,080206,297,280
Size1.3 GB 196.7 MB
Events in quadrant A8,548,7541,276,963
Events in quadrant B9,409,3361,290,303
Events in quadrant C9,585,5441,232,877
Events in quadrant D14,662,0661,215,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368053
B0392853
C0396533
D0555223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178801901.062640%
B178814332.421565%
C178812871.605056%
D17881232613.008221%

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 19745 17880 0 0 0.00% 0.00%
B 19746 17881 71 71 0.36% 0.40%
C 19746 17881 6 6 0.03% 0.03%
D 19746 17881 2111 2111 10.69% 11.81%

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 3 1 82359 182.33 2190 2139 440.0
A 13 254 32260 68.46 2190 2139 440.0
A 3 137 19655 39.81 2190 2139 440.0
B 0 245 360753 869.03 2171 2115 412.7
B 12 17 279171 671.35 2171 2115 412.7
B 15 33 187728 449.77 2171 2115 412.7
C 7 247 859143 1747.77 2101 2119 490.4
C 14 238 331502 671.72 2101 2119 490.4
C 2 16 165022 332.22 2101 2119 490.4
D 7 238 5873150 11923.94 2014 1959 492.4
D 8 195 701035 1419.77 2014 1959 492.4
D 12 32 208234 418.93 2014 1959 492.4

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