ASTROSAT CZTI

Data Quality Report

Orbit 30931

Creation date: 2024-06-27T20:21:18.380957
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/AS1C06_007T01_9000004470_30931cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30931cztM0_level2_quad_clean.evt
Size (bytes)563,313,60090,987,840
Size537.2 MB 86.8 MB
Events in quadrant A2,968,519609,426
Events in quadrant B5,445,954610,016
Events in quadrant C3,787,765566,703
Events in quadrant D4,446,521544,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126131
B0205241
C0152671
D0173761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6073270.444591%
B60731662.733410%
C60735048.299028%
D60732934.824634%

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 7303 6074 0 0 0.00% 0.00%
B 7303 6073 31 31 0.42% 0.51%
C 7303 6073 9 9 0.12% 0.15%
D 7303 6074 247 247 3.38% 4.07%

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 12382 75.41 769 753 154.2
A 3 137 6887 39.78 769 753 154.2
A 0 226 6556 37.63 769 753 154.2
B 6 159 1919177 13452.93 767 747 142.6
B 0 190 247124 1727.71 767 747 142.6
B 5 255 86755 603.13 767 747 142.6
C 3 233 466125 2769.9 720 727 168.0
C 14 238 240954 1429.76 720 727 168.0
C 14 254 181716 1077.19 720 727 168.0
D 8 195 420261 2407.1 729 710 174.3
D 13 249 380920 2181.39 729 710 174.3
D 13 174 314268 1798.98 729 710 174.3

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