ASTROSAT CZTI

Data Quality Report

Orbit 33645

Creation date: 2024-06-27T20:51:02.242570
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/AS1T04_076T01_9000004810_33645cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33645cztM0_level2_quad_clean.evt
Size (bytes)504,158,40072,095,040
Size480.8 MB 68.8 MB
Events in quadrant A2,754,036454,802
Events in quadrant B4,592,950427,476
Events in quadrant C3,534,047453,662
Events in quadrant D3,981,552428,747

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121633
B0174202
C0143042
D0158672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5983140.233996%
B59835619.376567%
C5983871.454120%
D59831502.507103%

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 7357 5984 2 2 0.03% 0.03%
B 7357 5984 514 514 6.99% 8.59%
C 7357 5984 73 73 0.99% 1.22%
D 7357 5984 126 126 1.71% 2.11%

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 7 16 30245 209.78 696 682 140.9
A 13 6 15869 107.77 696 682 140.9
A 13 254 9259 60.86 696 682 140.9
B 5 172 1567621 12200.76 669 652 128.4
B 15 85 113994 882.51 669 652 128.4
B 4 251 56269 433.05 669 652 128.4
C 3 233 350823 2232.87 675 681 156.8
C 15 214 273585 1740.32 675 681 156.8
C 0 10 230870 1467.92 675 681 156.8
D 8 195 649340 3887.95 673 653 166.8
D 13 249 373227 2233.05 673 653 166.8
D 2 249 93569 556.9 673 653 166.8

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