ASTROSAT CZTI

Data Quality Report

Orbit 26999

Creation date: 2024-06-27T19:35:26.164068
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/AS1A09_145T01_9000003900_26999cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26999cztM0_level2_quad_clean.evt
Size (bytes)645,557,760100,405,440
Size615.7 MB 95.8 MB
Events in quadrant A5,863,182620,447
Events in quadrant B3,377,175681,955
Events in quadrant C3,363,759654,670
Events in quadrant D6,483,426606,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219370
B0141780
C0141840
D0240920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A683680711.805149%
B6836911.331188%
C68371061.550388%
D6837113316.571596%

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 7361 6836 597 597 8.11% 8.73%
B 7361 6836 0 0 0.00% 0.00%
C 7362 6838 0 0 0.00% 0.00%
D 7362 6839 901 901 12.24% 13.17%

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 6 16 1459626 8742.52 818 803 166.9
A 14 235 1207124 7229.31 818 803 166.9
A 15 174 22716 131.32 818 803 166.9
B 0 219 29524 173.51 856 835 165.3
B 12 111 19805 114.73 856 835 165.3
B 11 111 17700 102.0 856 835 165.3
C 14 238 131418 668.7 824 833 195.3
C 15 208 12220 58.31 824 833 195.3
C 5 218 8788 40.74 824 833 195.3
D 5 222 2901106 15475.38 776 758 187.4
D 11 176 380958 2028.63 776 758 187.4
D 1 52 128256 680.29 776 758 187.4

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