ASTROSAT CZTI

Data Quality Report

Orbit 11172

Creation date: 2024-06-27T16:09:18.461837
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/AS1A04_042T01_9000001630_11172cztM0_level2.evt modeM0/AS1A04_042T01_9000001630_11172cztM0_level2_quad_clean.evt
Size (bytes)20,701,4404,567,680
Size19.7 MB 4.4 MB
Events in quadrant A239,64124,782
Events in quadrant B138,10130,586
Events in quadrant C110,23830,071
Events in quadrant D119,83128,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01614
B01513
C01614
D01513

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026821791
B01532987
C01472994
D01479986

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2264519.911504%
B23841.680672%
C23900.000000%
D23600.000000%

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 325 245 33 33 10.15% 13.47%
B 329 262 3 3 0.91% 1.15%
C 421 264 0 0 0.00% 0.00%
D 331 256 0 0 0.00% 0.00%

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 5 106968 15200.6 25 24 7.0
A 8 15 35665 5065.87 25 24 7.0
A 14 63 467 62.97 25 24 7.0
B 4 239 18397 2373.39 29 28 7.7
B 0 187 4954 636.47 29 28 7.7
B 15 204 1089 137.09 29 28 7.7
C 13 61 217 22.26 28 27 8.5
C 14 234 93 7.73 28 27 8.5
C 7 247 89 7.26 28 27 8.5
D 1 52 4715 541.24 27 26 8.7
D 10 253 3197 366.02 27 26 8.7
D 12 157 2960 338.67 27 26 8.7

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