ASTROSAT CZTI

Data Quality Report

Orbit 20747

Creation date: 2024-06-27T18:19:05.734754
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_9000003066_20747cztM0_level2.evt modeM0/AS1A05_063T03_9000003066_20747cztM0_level2_quad_clean.evt
Size (bytes)503,743,68099,293,760
Size480.4 MB 94.7 MB
Events in quadrant A3,341,529647,775
Events in quadrant B3,533,380641,456
Events in quadrant C3,373,903621,465
Events in quadrant D4,534,313611,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145203
B0149776
C0144827
D0181793

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6969590.846606%
B69681051.506889%
C6968971.392078%
D69702593.715925%

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 7235 6971 1 1 0.01% 0.01%
B 7236 6971 8 8 0.11% 0.11%
C 7236 6972 0 0 0.00% 0.00%
D 7236 6972 168 168 2.32% 2.41%

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 5 16 21488 117.59 863 842 175.6
A 0 226 7454 37.66 863 842 175.6
A 3 137 7101 35.65 863 842 175.6
B 7 220 64432 388.69 852 832 163.6
B 3 64 35820 213.83 852 832 163.6
B 0 229 34836 207.81 852 832 163.6
C 14 238 126678 645.6 827 833 194.9
C 9 54 10207 48.09 827 833 194.9
C 3 233 8973 41.76 827 833 194.9
D 1 52 699486 3474.08 832 809 201.1
D 5 222 306210 1518.57 832 809 201.1
D 2 165 192765 954.48 832 809 201.1

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