ASTROSAT CZTI

Data Quality Report

Orbit 27570

Creation date: 2024-06-27T19:41:36.685569
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_038T13_9000003966_27570cztM0_level2.evt modeM0/AS1A09_038T13_9000003966_27570cztM0_level2_quad_clean.evt
Size (bytes)196,254,72043,001,280
Size187.2 MB 41.0 MB
Events in quadrant A1,407,592278,126
Events in quadrant B1,458,560287,412
Events in quadrant C1,421,417273,764
Events in quadrant D1,466,357265,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057630
B059740
C057640
D060140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2755270.980036%
B2755240.871143%
C2755401.451906%
D2755120.435572%

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 3835 2756 4 4 0.10% 0.15%
B 3835 2756 1 1 0.03% 0.04%
C 3835 2756 0 0 0.00% 0.00%
D 3835 2756 6 6 0.16% 0.22%

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 8 192 9815 127.13 362 355 74.4
A 13 254 4661 57.87 362 355 74.4
A 3 137 3578 43.31 362 355 74.4
B 0 183 11976 167.3 360 351 69.5
B 0 230 8824 121.94 360 351 69.5
B 12 111 8322 114.71 360 351 69.5
C 14 238 56459 683.18 346 348 82.1
C 4 175 9008 105.44 346 348 82.1
C 1 16 2486 26.03 346 348 82.1
D 1 52 111763 1312.2 349 338 84.9
D 2 250 19775 228.9 349 338 84.9
D 2 234 11630 132.98 349 338 84.9

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