ASTROSAT CZTI

Data Quality Report

Orbit 04337

Creation date: 2024-06-27T14:40:33.263087
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/AS1G05_219T01_9000000540_04337cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04337cztM0_level2_quad_clean.evt
Size (bytes)798,157,44053,161,920
Size761.2 MB 50.7 MB
Events in quadrant A3,198,125347,607
Events in quadrant B14,529,311131,427
Events in quadrant C2,863,971342,446
Events in quadrant D3,139,103331,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139872
B0475531
C0132181
D0140741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6523941.441055%
B6523511678.430170%
C6523330.505902%
D6523510.781849%

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 7478 6523 42 42 0.56% 0.64%
B 7478 6523 4909 4909 65.65% 75.26%
C 7478 6523 0 0 0.00% 0.00%
D 7478 6523 24 24 0.32% 0.37%

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 15 234 230541 1471.63 756 738 156.2
A 0 13 23359 144.86 756 738 156.2
A 8 15 18728 115.21 756 738 156.2
B 3 0 12729433 154423.82 429 418 82.4
B 14 167 54105 651.31 429 418 82.4
B 10 16 38670 464.06 429 418 82.4
C 13 61 6066 30.87 731 733 172.8
C 9 16 5187 25.78 731 733 172.8
C 9 54 2083 7.81 731 733 172.8
D 2 136 100138 561.34 727 706 177.1
D 13 239 78352 438.34 727 706 177.1
D 2 37 39886 221.19 727 706 177.1

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