ASTROSAT CZTI

Data Quality Report

Orbit 40141

Creation date: 2024-06-27T22:12:48.170827
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/AS1A12_004T01_9000005520_40141cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40141cztM0_level2_quad_clean.evt
Size (bytes)566,640,00074,496,960
Size540.4 MB 71.0 MB
Events in quadrant A2,848,986624,985
Events in quadrant B2,365,943650,594
Events in quadrant C12,575,52958,162
Events in quadrant D2,792,130569,264

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116153
B0103232
C0408172
D0118092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5037170.337502%
B5037180.357356%
C5037467892.872742%
D5037490.972801%

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 7069 5038 7 7 0.10% 0.14%
B 7069 5038 2 2 0.03% 0.04%
C 7068 5036 4626 4626 65.45% 91.86%
D 7069 5038 49 49 0.69% 0.97%

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 440409 3708.89 581 571 118.6
A 13 248 45287 377.06 581 571 118.6
A 2 79 42179 350.86 581 571 118.6
B 0 190 29740 260.87 586 571 111.8
B 5 172 23997 209.51 586 571 111.8
B 12 111 13773 118.07 586 571 111.8
C 9 187 11323526 171355.73 282 285 66.1
C 15 214 108751 1641.43 282 285 66.1
C 0 10 20310 303.04 282 285 66.1
D 13 249 157130 1139.9 571 558 137.4
D 12 227 110680 801.72 571 558 137.4
D 9 19 80603 582.75 571 558 137.4

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