ASTROSAT CZTI

Data Quality Report

Orbit 35062

Creation date: 2024-06-27T21:08:51.724137
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_046T08_9000005024_35062cztM0_level2.evt modeM0/AS1A11_046T08_9000005024_35062cztM0_level2_quad_clean.evt
Size (bytes)265,844,16063,696,960
Size253.5 MB 60.7 MB
Events in quadrant A1,546,146421,023
Events in quadrant B1,647,745432,121
Events in quadrant C1,715,844440,714
Events in quadrant D2,913,471398,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068832
B071721
C070601
D0110071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3329100.300391%
B3329310.931211%
C3329431.291679%
D33292136.398318%

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 5212 3329 10 10 0.19% 0.30%
B 5212 3329 16 16 0.31% 0.48%
C 5213 3330 35 35 0.67% 1.05%
D 5212 3329 190 190 3.65% 5.71%

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 9 143 46263 606.53 374 366 75.7
A 10 83 41053 537.68 374 366 75.7
A 13 6 5892 73.03 374 366 75.7
B 5 172 97898 1347.32 374 364 72.4
B 0 190 57505 789.34 374 364 72.4
B 4 232 10311 137.41 374 364 72.4
C 15 214 137452 1599.87 368 372 85.7
C 0 10 117752 1369.95 368 372 85.7
C 14 67 15102 171.91 368 372 85.7
D 8 195 516835 5903.83 355 346 87.5
D 10 118 220608 2517.75 355 346 87.5
D 12 227 132609 1511.86 355 346 87.5

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