ASTROSAT CZTI

Data Quality Report

Orbit 04937

Creation date: 2024-06-27T14:49:04.400302
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_021T01_9000000624_04937cztM0_level2.evt modeM0/AS1G05_021T01_9000000624_04937cztM0_level2_quad_clean.evt
Size (bytes)908,720,64085,838,400
Size866.6 MB 81.9 MB
Events in quadrant A9,950,107387,814
Events in quadrant B2,940,973656,132
Events in quadrant C10,310,795504,735
Events in quadrant D3,909,690623,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337012
B0128371
C0348181
D0159301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6072334855.138340%
B6072570.938735%
C6072286547.183794%
D60722434.001976%

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 7172 6072 2890 2890 40.30% 47.60%
B 7172 6073 3 3 0.04% 0.05%
C 7172 6072 2861 2861 39.89% 47.12%
D 7172 6072 214 214 2.98% 3.52%

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 31 8208121 91224.63 433 425 90.0
A 13 251 30064 329.42 433 425 90.0
A 0 50 19767 214.98 433 425 90.0
B 15 204 109183 812.63 701 685 133.5
B 0 219 45499 335.65 701 685 133.5
B 0 183 24672 179.66 701 685 133.5
C 9 247 8107625 64279.41 548 550 126.1
C 1 16 52834 414.55 548 550 126.1
C 14 67 7350 53.92 548 550 126.1
D 2 33 736167 4559.69 662 642 161.3
D 2 136 291468 1802.9 662 642 161.3
D 12 110 152700 942.64 662 642 161.3

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