ASTROSAT CZTI

Data Quality Report

Orbit 35795

Creation date: 2022-05-12T15:31:26.731956
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/AS1A09_029T09_9000005138_35795cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35795cztM0_level2_quad_clean.evt
Size (bytes)427,723,20099,524,160
Size407.9 MB 94.9 MB
Events in quadrant A2,814,701676,354
Events in quadrant B3,602,253670,903
Events in quadrant C3,019,076661,745
Events in quadrant D3,155,360631,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115853
B0140982
C0123662
D0127402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5336160.299850%
B53361953.654423%
C5336851.592954%
D53361202.248876%

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 7159 5337 0 0 0.00% 0.00%
B 7159 5337 136 136 1.90% 2.55%
C 7159 5337 59 59 0.82% 1.11%
D 7159 5337 100 100 1.40% 1.87%

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 10 83 156056 1169.51 661 650 132.9
A 15 169 101619 759.85 661 650 132.9
A 7 3 7092 48.48 661 650 132.9
B 5 172 273209 2226.27 642 627 122.4
B 4 171 272048 2216.79 642 627 122.4
B 4 232 244848 1994.64 642 627 122.4
C 15 214 226850 1558.8 629 635 145.1
C 0 10 222492 1528.77 629 635 145.1
C 10 49 101825 697.28 629 635 145.1
D 13 249 365044 2395.7 635 619 152.1
D 2 249 68498 446.23 635 619 152.1
D 8 195 61525 400.39 635 619 152.1

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