ASTROSAT CZTI

Data Quality Report

Orbit 28185

Creation date: 2024-06-27T19:47:03.123123
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/AS1A10_021T08_9000004042_28185cztM0_level2.evt modeM0/AS1A10_021T08_9000004042_28185cztM0_level2_quad_clean.evt
Size (bytes)72,351,36012,021,120
Size69.0 MB 11.5 MB
Events in quadrant A495,83371,325
Events in quadrant B525,72872,747
Events in quadrant C495,68570,530
Events in quadrant D596,56465,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021250
B022360
C021360
D024270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093
B094
C094
D093

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1033111.064860%
B1056292.746212%
C1033272.613746%
D1014151.479290%

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 2843 1159 0 0 0.00% 0.00%
B 2841 1181 5 5 0.18% 0.42%
C 2842 1148 0 0 0.00% 0.00%
D 2844 1124 8 8 0.28% 0.71%

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 13 254 1497 49.18 127 125 27.9
A 3 137 1258 40.61 127 125 27.9
A 0 226 1171 37.49 127 125 27.9
B 10 245 19318 708.76 128 124 27.1
B 12 111 3099 109.86 128 124 27.1
B 11 111 2877 101.66 128 124 27.1
C 14 238 19188 640.47 119 120 29.8
C 3 233 6294 207.38 119 120 29.8
C 15 208 2403 76.68 119 120 29.8
D 1 52 112315 3717.13 119 115 30.2
D 8 195 19274 634.73 119 115 30.2
D 5 222 12160 399.04 119 115 30.2

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