ASTROSAT CZTI

Data Quality Report

Orbit 10284

Creation date: 2024-06-27T15:57:24.360984
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/AS1C02_021T01_9000001482_10284cztM0_level2.evt modeM0/AS1C02_021T01_9000001482_10284cztM0_level2_quad_clean.evt
Size (bytes)709,027,200142,522,560
Size676.2 MB 135.9 MB
Events in quadrant A4,921,643910,221
Events in quadrant B5,168,700915,632
Events in quadrant C4,434,809912,657
Events in quadrant D6,259,400873,968

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218214
B0224572
C0208542
D0253412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10157620.610416%
B101581631.604647%
C10158450.443001%
D101581871.840914%

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 10988 10160 23 23 0.21% 0.23%
B 10988 10160 69 69 0.63% 0.68%
C 10988 10160 14 14 0.13% 0.14%
D 10988 10160 137 137 1.25% 1.35%

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 8 15 376369 1630.1 1125 1096 230.2
A 5 16 69943 299.06 1125 1096 230.2
A 8 5 65432 279.46 1125 1096 230.2
B 4 239 342235 1592.09 1131 1103 214.3
B 11 51 219207 1017.91 1131 1103 214.3
B 6 51 51204 233.82 1131 1103 214.3
C 4 254 123705 481.76 1099 1105 254.5
C 13 61 8337 28.42 1099 1105 254.5
C 8 128 8268 28.15 1099 1105 254.5
D 8 195 708044 2694.81 1089 1056 262.4
D 13 105 429681 1633.78 1089 1056 262.4
D 2 14 314150 1193.41 1089 1056 262.4

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