ASTROSAT CZTI

Data Quality Report

Orbit 19216

Creation date: 2024-06-27T18:00:19.692336
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/AS1A05_063T03_9000002840_19216cztM0_level2.evt modeM0/AS1A05_063T03_9000002840_19216cztM0_level2_quad_clean.evt
Size (bytes)1,334,361,600212,662,080
Size1.2 GB 202.8 MB
Events in quadrant A8,432,3351,298,770
Events in quadrant B8,672,4951,331,110
Events in quadrant C12,903,3861,279,427
Events in quadrant D9,164,8511,268,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372424
B0373393
C0523313
D0400473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183322181.189177%
B183322361.287366%
C183324652.536548%
D183322221.210997%

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 20302 18332 3 3 0.01% 0.02%
B 20302 18332 0 0 0.00% 0.00%
C 20302 18332 30 30 0.15% 0.16%
D 20302 18332 42 42 0.21% 0.23%

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 24156 50.08 2185 2138 439.7
A 0 226 18797 37.89 2185 2138 439.7
A 3 137 18183 36.49 2185 2138 439.7
B 12 111 52456 121.43 2180 2122 414.5
B 11 111 46297 106.57 2180 2122 414.5
B 14 111 39978 91.33 2180 2122 414.5
C 3 233 4415432 9093.86 2089 2104 485.3
C 14 238 321190 657.49 2089 2104 485.3
C 6 96 27036 51.37 2089 2104 485.3
D 1 52 779480 1506.31 2126 2065 516.1
D 11 176 229857 441.37 2126 2065 516.1
D 7 96 86561 163.72 2126 2065 516.1

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