ASTROSAT CZTI

Data Quality Report

Orbit 13373

Creation date: 2024-06-27T16:39:48.515017
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/AS1A04_103T01_9000001988_13373cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13373cztM0_level2_quad_clean.evt
Size (bytes)310,095,36063,800,640
Size295.7 MB 60.8 MB
Events in quadrant A2,104,662421,119
Events in quadrant B2,086,797432,620
Events in quadrant C2,152,484412,611
Events in quadrant D2,776,990385,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088043
B087112
C089762
D0108832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3954671.694487%
B3954761.922104%
C3954551.390996%
D39541844.653515%

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 5255 3957 7 7 0.13% 0.18%
B 5255 3957 3 3 0.06% 0.08%
C 5255 3957 8 8 0.15% 0.20%
D 5255 3957 122 122 2.32% 3.08%

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 9 143 71154 677.37 521 512 104.3
A 1 162 12250 112.55 521 512 104.3
A 0 226 4599 39.19 521 512 104.3
B 3 64 19034 186.11 526 514 99.5
B 12 111 11134 106.72 526 514 99.5
B 11 111 9144 86.72 526 514 99.5
C 14 220 154000 1316.7 505 509 116.6
C 3 233 30201 254.71 505 509 116.6
C 13 61 3711 27.47 505 509 116.6
D 1 52 679215 5817.43 490 476 116.7
D 5 222 167447 1431.1 490 476 116.7
D 8 195 71990 612.94 490 476 116.7

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