ASTROSAT CZTI

Data Quality Report

Orbit 00769

Creation date: 2024-06-27T14:02:41.848247
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/AS1P01_010T01_9000000108_00769cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00769cztM0_level2_quad_clean.evt
Size (bytes)1,019,928,96094,668,480
Size972.7 MB 90.3 MB
Events in quadrant A7,737,231601,178
Events in quadrant B7,985,173638,648
Events in quadrant C7,603,215605,326
Events in quadrant D7,139,857576,782

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275100
B0282530
C0271430
D0258070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63751271.992157%
B6375380.596078%
C6374580.909947%
D63741592.494509%

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 7235 6376 395 395 5.46% 6.20%
B 7235 6376 330 330 4.56% 5.18%
C 7234 6375 281 281 3.88% 4.41%
D 7234 6375 335 335 4.63% 5.25%

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 0 117 131300 281.04 1968 1986 460.1
A 15 249 25408 50.9 1968 1986 460.1
A 13 17 17560 33.85 1968 1986 460.1
B 0 220 136839 281.5 2047 2051 478.8
B 7 221 57196 115.17 2047 2051 478.8
B 5 191 10630 17.92 2047 2051 478.8
C 10 17 68755 127.89 1895 1967 522.2
C 15 241 37970 68.94 1895 1967 522.2
C 3 111 30425 54.49 1895 1967 522.2
D 13 25 109359 192.93 1838 1905 557.0
D 12 188 85266 149.67 1838 1905 557.0
D 1 4 60802 105.75 1838 1905 557.0

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