ASTROSAT CZTI

Data Quality Report

Orbit 26621

Creation date: 2024-06-27T19:31:05.928802
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/AS1A09_145T01_9000003848_26621cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26621cztM0_level2_quad_clean.evt
Size (bytes)661,458,24066,199,680
Size630.8 MB 63.1 MB
Events in quadrant A3,317,078434,107
Events in quadrant B4,497,078432,063
Events in quadrant C3,240,210420,066
Events in quadrant D8,576,789303,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132830
B0174270
C0129220
D0295620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59331192.005731%
B59322884.855024%
C59331422.393393%
D5933216736.524524%

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 7058 5934 0 0 0.00% 0.00%
B 7057 5933 20 20 0.28% 0.34%
C 7058 5934 0 0 0.00% 0.00%
D 7058 5934 1870 1870 26.49% 31.51%

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 0 13 145658 891.62 813 802 162.5
A 5 168 30071 180.16 813 802 162.5
A 13 254 10343 58.73 813 802 162.5
B 0 189 1247156 8359.94 795 780 149.1
B 5 172 55225 365.18 795 780 149.1
B 14 207 31368 205.17 795 780 149.1
C 14 238 125629 686.28 776 782 181.9
C 3 233 79704 433.83 776 782 181.9
C 15 208 9611 48.53 776 782 181.9
D 7 80 3982731 25025.46 662 649 159.1
D 1 52 1786639 11224.09 662 649 159.1
D 2 250 184017 1152.38 662 649 159.1

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