ASTROSAT CZTI

Data Quality Report

Orbit 21836

Creation date: 2024-06-27T18:32:50.198175
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_004T01_9000003230_21836cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21836cztM0_level2_quad_clean.evt
Size (bytes)1,249,741,440246,778,560
Size1.2 GB 235.3 MB
Events in quadrant A8,533,1871,570,877
Events in quadrant B9,765,3431,591,337
Events in quadrant C8,592,8201,551,062
Events in quadrant D9,715,8621,496,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373323
B0403143
C0374433
D0408663

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183501700.926431%
B183513842.092529%
C183512541.384121%
D183512411.313280%

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 20345 18351 0 0 0.00% 0.00%
B 20346 18352 138 138 0.68% 0.75%
C 20346 18352 0 0 0.00% 0.00%
D 20346 18353 100 100 0.49% 0.54%

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 34626 72.76 2209 2157 446.2
A 0 226 19165 38.11 2209 2157 446.2
A 3 137 18603 36.86 2209 2157 446.2
B 3 64 732623 1759.98 2194 2136 415.1
B 0 230 108267 255.7 2194 2136 415.1
B 0 190 73057 170.87 2194 2136 415.1
C 14 238 329699 660.76 2115 2127 495.8
C 13 61 14713 25.39 2115 2127 495.8
C 10 22 12265 20.45 2115 2127 495.8
D 1 52 1024171 1978.54 2138 2075 516.6
D 12 235 125491 238.9 2138 2075 516.6
D 5 32 119083 226.5 2138 2075 516.6

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