ASTROSAT CZTI

Data Quality Report

Orbit 23786

Creation date: 2024-06-27T18:58:42.810320
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/AS1A07_113T01_9000003526_23786cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23786cztM0_level2_quad_clean.evt
Size (bytes)634,861,440113,212,800
Size605.5 MB 108.0 MB
Events in quadrant A3,989,802718,082
Events in quadrant B4,412,433738,422
Events in quadrant C4,119,324710,018
Events in quadrant D6,146,380689,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01682
B01680
C01680
D01682

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017456124
B018659100
C01763479
D02411992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82361091.323458%
B82482793.382638%
C82581952.361347%
D82534675.658548%

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 9057 8291 0 0 0.00% 0.00%
B 9057 8291 41 41 0.45% 0.49%
C 9057 8293 0 0 0.00% 0.00%
D 9057 8298 248 248 2.74% 2.99%

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 14583 64.55 1034 1012 210.2
A 3 137 9374 39.77 1034 1012 210.2
A 0 226 8878 37.41 1034 1012 210.2
B 3 64 271428 1343.26 1036 1010 201.3
B 12 17 36024 173.93 1036 1010 201.3
B 12 111 24544 116.9 1036 1010 201.3
C 14 238 157291 661.68 997 1002 236.2
C 7 247 58517 243.5 997 1002 236.2
C 13 61 7049 25.6 997 1002 236.2
D 8 195 1695681 6930.64 992 962 244.5
D 1 52 353605 1442.15 992 962 244.5
D 12 233 241203 982.48 992 962 244.5

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