ASTROSAT CZTI

Data Quality Report

Orbit 19573

Creation date: 2024-06-27T18:04:21.861647
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/AS1T03_005T01_9000002908_19573cztM0_level2.evt modeM0/AS1T03_005T01_9000002908_19573cztM0_level2_quad_clean.evt
Size (bytes)589,959,36092,347,200
Size562.6 MB 88.1 MB
Events in quadrant A3,619,684602,818
Events in quadrant B3,644,170608,503
Events in quadrant C3,696,956572,065
Events in quadrant D6,402,557496,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154142
B0154732
C0155972
D0238112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74221211.630288%
B74221321.778496%
C74221802.425222%
D7422102713.837241%

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 7782 7422 2 2 0.03% 0.03%
B 7782 7423 4 4 0.05% 0.05%
C 7782 7423 1 1 0.01% 0.01%
D 7782 7423 843 843 10.83% 11.36%

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 11 29 57880 308.25 915 893 184.9
A 9 143 16246 83.05 915 893 184.9
A 5 16 10221 50.46 915 893 184.9
B 3 64 25956 144.36 906 885 173.7
B 12 111 21403 118.14 906 885 173.7
B 11 111 18789 103.09 906 885 173.7
C 14 238 134346 654.66 869 873 203.9
C 9 221 109295 531.79 869 873 203.9
C 3 233 39217 188.07 869 873 203.9
D 13 104 1687316 8247.04 831 807 204.5
D 12 218 701457 3426.18 831 807 204.5
D 7 238 323330 1577.14 831 807 204.5

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