ASTROSAT CZTI

Data Quality Report

Orbit 23323

Creation date: 2024-06-27T18:52:50.373443
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_148T05_9000003446_23323cztM0_level2.evt modeM0/AS1A07_148T05_9000003446_23323cztM0_level2_quad_clean.evt
Size (bytes)571,314,240100,923,840
Size544.8 MB 96.2 MB
Events in quadrant A4,090,657627,400
Events in quadrant B4,199,666635,855
Events in quadrant C4,171,215612,635
Events in quadrant D4,280,019606,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175273
B0177032
C0175752
D0183532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82631161.403848%
B82641852.238625%
C82642142.589545%
D82641111.343175%

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 9068 8265 1 1 0.01% 0.01%
B 9069 8266 3 3 0.03% 0.04%
C 9069 8266 1 1 0.01% 0.01%
D 9069 8266 41 41 0.45% 0.50%

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 47925 221.43 1048 1023 211.8
A 13 254 12226 52.89 1048 1023 211.8
A 3 137 9614 40.56 1048 1023 211.8
B 0 230 34546 166.6 1042 1013 201.3
B 0 190 33875 163.27 1042 1013 201.3
B 12 111 24886 118.61 1042 1013 201.3
C 14 238 156571 658.0 1005 1009 236.4
C 7 247 61448 255.64 1005 1009 236.4
C 10 9 19164 76.79 1005 1009 236.4
D 1 52 112068 442.06 1023 993 251.3
D 12 233 111180 438.52 1023 993 251.3
D 13 104 93395 367.74 1023 993 251.3

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