ASTROSAT CZTI

Data Quality Report

Orbit 06942

Creation date: 2024-06-27T15:13:28.649160
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/AS1A02_103T01_9000000950_06942cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06942cztM0_level2_quad_clean.evt
Size (bytes)2,189,586,240265,481,280
Size2.0 GB 253.2 MB
Events in quadrant A10,738,2551,716,265
Events in quadrant B11,266,4241,733,131
Events in quadrant C29,738,9661,328,245
Events in quadrant D12,984,8271,645,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04780
B04780
C04780
D04780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483995
B0496124
C01041174
D0540704

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234761770.753961%
B234762521.073437%
C23476808734.447947%
D234762260.962685%

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 25996 23481 5 5 0.02% 0.02%
B 25996 23481 24 24 0.09% 0.10%
C 25996 23479 6920 6920 26.62% 29.47%
D 25996 23481 93 93 0.36% 0.40%

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 4 2 134395 236.8 2727 2668 556.3
A 14 239 41408 69.64 2727 2668 556.3
A 8 15 27271 44.23 2727 2668 556.3
B 0 228 390725 739.2 2738 2674 525.0
B 4 81 90231 166.79 2738 2674 525.0
B 12 111 54076 97.92 2738 2674 525.0
C 9 247 21883406 47376.82 1994 2005 461.9
C 7 247 29091 58.65 1994 2005 461.9
C 12 4 20129 39.24 1994 2005 461.9
D 8 195 1920473 2973.13 2641 2556 645.1
D 2 14 311358 478.7 2641 2556 645.1
D 2 136 290616 446.55 2641 2556 645.1

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