ASTROSAT CZTI

Data Quality Report

Orbit 31817

Creation date: 2024-06-27T20:33:07.438452
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/AS1A10_109T01_9000004646_31817cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31817cztM0_level2_quad_clean.evt
Size (bytes)1,034,671,680187,038,720
Size986.7 MB 178.4 MB
Events in quadrant A9,310,3541,212,103
Events in quadrant B8,183,9221,306,569
Events in quadrant C6,174,4861,259,385
Events in quadrant D7,016,3051,217,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021012
B021012
C021115
D021111

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0354661225
B0325361970
C0259151208
D0288401660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9666171217.711566%
B96293763.904871%
C96675125.296369%
D96373023.133755%

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 12879 9737 1084 1084 8.42% 11.13%
B 12879 9695 27 27 0.21% 0.28%
C 12879 9745 142 142 1.10% 1.46%
D 12879 9710 122 122 0.95% 1.26%

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 0 13 4383673 17499.57 1276 1257 250.4
A 13 254 16414 60.52 1276 1257 250.4
A 3 137 11729 41.82 1276 1257 250.4
B 6 159 2509603 10055.63 1332 1302 249.4
B 10 245 420151 1679.14 1332 1302 249.4
B 12 111 29061 111.28 1332 1302 249.4
C 0 10 623312 2068.94 1298 1313 300.6
C 14 238 227290 751.66 1298 1313 300.6
C 3 233 205670 679.75 1298 1313 300.6
D 8 195 1483082 4747.83 1325 1298 312.1
D 1 52 239353 762.76 1325 1298 312.1
D 12 218 112621 356.69 1325 1298 312.1

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