ASTROSAT CZTI

Data Quality Report

Orbit 30840

Creation date: 2024-06-27T20:20:12.649501
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_071T40_9000004458_30840cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30840cztM0_level2_quad_clean.evt
Size (bytes)1,475,735,040228,441,600
Size1.4 GB 217.9 MB
Events in quadrant A8,534,5631,464,192
Events in quadrant B14,551,3781,441,309
Events in quadrant C9,477,6531,385,543
Events in quadrant D10,913,4161,384,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370843
B0561223
C0395954
D0439803

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180311911.059287%
B180324882.706300%
C180315182.872830%
D180312091.159115%

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 19801 18031 0 0 0.00% 0.00%
B 19802 18032 113 113 0.57% 0.63%
C 19801 18031 2 2 0.01% 0.01%
D 19801 18031 57 57 0.29% 0.32%

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 33401 70.17 2212 2163 445.1
A 3 137 22497 45.68 2212 2163 445.1
A 0 226 18394 36.46 2212 2163 445.1
B 6 159 5145212 12351.44 2175 2118 416.4
B 5 172 378908 904.88 2175 2118 416.4
B 6 36 257311 612.86 2175 2118 416.4
C 3 233 644682 1278.42 2105 2117 502.6
C 14 238 421736 834.85 2105 2117 502.6
C 14 254 119852 234.24 2105 2117 502.6
D 8 195 1773299 3505.0 2136 2090 505.3
D 1 52 641173 1264.67 2136 2090 505.3
D 2 250 102843 199.38 2136 2090 505.3

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