ASTROSAT CZTI

Data Quality Report

Orbit 02477

Creation date: 2024-06-27T14:18:20.200169
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/AS1G02_018T06_9000000370_02477cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02477cztM0_level2_quad_clean.evt
Size (bytes)423,282,24080,501,760
Size403.7 MB 76.8 MB
Events in quadrant A3,087,638486,946
Events in quadrant B3,172,749503,526
Events in quadrant C3,051,648499,244
Events in quadrant D3,054,618484,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136543
B0137622
C0136392
D0138292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6640951.430723%
B66401051.581325%
C6640630.948795%
D6640741.114458%

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 7630 6641 0 0 0.00% 0.00%
B 7630 6641 0 0 0.00% 0.00%
C 7630 6641 0 0 0.00% 0.00%
D 7630 6641 4 4 0.05% 0.06%

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 14 63 10963 62.67 797 777 162.5
A 12 194 9090 51.15 797 777 162.5
A 0 226 8474 47.36 797 777 162.5
B 4 48 25018 154.81 810 790 156.5
B 4 200 15547 94.29 810 790 156.5
B 12 111 11357 67.52 810 790 156.5
C 13 61 6986 34.16 778 783 181.6
C 10 65 4575 20.88 778 783 181.6
C 12 4 3127 12.91 778 783 181.6
D 7 67 55054 296.64 771 753 183.1
D 12 1 17109 89.35 771 753 183.1
D 5 172 15981 83.19 771 753 183.1

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