ASTROSAT CZTI

Data Quality Report

Orbit 36229

Creation date: 2022-06-10T23:00:27.779286
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/AS1A11_080T02_9000005176_36229cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36229cztM0_level2_quad_clean.evt
Size (bytes)697,639,68061,986,240
Size665.3 MB 59.1 MB
Events in quadrant A2,606,360436,010
Events in quadrant B4,120,430420,354
Events in quadrant C2,848,829427,436
Events in quadrant D11,193,705220,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111684
B0157822
C0117072
D0368242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530270.132026%
B53023927.393436%
C5302500.943040%
D5302367069.219163%

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 7095 5304 2 2 0.03% 0.04%
B 7094 5303 267 267 3.76% 5.03%
C 7095 5304 36 36 0.51% 0.68%
D 7095 5304 3516 3516 49.56% 66.29%

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 171689 1382.2 613 602 123.8
A 13 6 25594 201.91 613 602 123.8
A 9 143 18918 147.97 613 602 123.8
B 5 236 832093 7370.98 595 580 112.8
B 5 172 371970 3292.2 595 580 112.8
B 0 213 317927 2813.14 595 580 112.8
C 0 10 275024 1964.49 598 602 139.7
C 15 214 223175 1593.32 598 602 139.7
C 12 250 14705 100.96 598 602 139.7
D 12 227 6802745 71893.04 385 374 94.6
D 12 6 2332125 24643.86 385 374 94.6
D 12 235 373939 3948.14 385 374 94.6

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