ASTROSAT CZTI

Data Quality Report

Orbit 16477

Creation date: 2024-06-27T17:23:18.589717
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/AS1A05_108T01_9000002438_16477cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16477cztM0_level2_quad_clean.evt
Size (bytes)540,149,76075,559,680
Size515.1 MB 72.1 MB
Events in quadrant A3,993,209437,930
Events in quadrant B4,205,706448,147
Events in quadrant C4,060,116432,569
Events in quadrant D3,574,226431,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170548
B0174215
C0167685
D0162277

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77323224.164511%
B77323144.061045%
C77332953.814820%
D77311932.496443%

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 7950 7734 73 73 0.92% 0.94%
B 7950 7735 19 19 0.24% 0.25%
C 7950 7734 0 0 0.00% 0.00%
D 7950 7735 7 7 0.09% 0.09%

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 15 174 357136 1858.24 939 914 191.7
A 15 190 13114 63.64 939 914 191.7
A 0 226 8117 37.57 939 914 191.7
B 4 48 129571 697.64 943 916 184.4
B 3 209 108731 584.63 943 916 184.4
B 10 16 97205 522.13 943 916 184.4
C 3 233 201293 932.08 910 914 215.0
C 7 247 165685 766.44 910 914 215.0
C 14 238 137292 634.37 910 914 215.0
D 10 70 40127 171.58 928 900 228.6
D 2 234 31061 131.93 928 900 228.6
D 13 168 26075 110.12 928 900 228.6

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