ASTROSAT CZTI

Data Quality Report

Orbit 25817

Creation date: 2024-06-27T19:21:45.529328
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/AS1A07_068T01_9000003756_25817cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25817cztM0_level2_quad_clean.evt
Size (bytes)1,259,380,800242,455,680
Size1.2 GB 231.2 MB
Events in quadrant A9,033,3781,553,148
Events in quadrant B8,874,8801,562,576
Events in quadrant C8,848,9821,484,166
Events in quadrant D10,141,7651,478,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384260
B0378010
C0377750
D0410150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183642091.138096%
B183642111.148987%
C183652951.606316%
D183652151.170705%

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 20269 18364 0 0 0.00% 0.00%
B 20269 18364 14 14 0.07% 0.08%
C 20270 18365 8 8 0.04% 0.04%
D 20270 18365 64 64 0.32% 0.35%

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 392756 871.67 2234 2187 448.1
A 13 254 25205 51.37 2234 2187 448.1
A 9 130 21646 43.43 2234 2187 448.1
B 4 171 82814 191.06 2209 2152 422.2
B 12 111 53774 122.27 2209 2152 422.2
B 11 111 48120 108.88 2209 2152 422.2
C 14 238 340122 677.33 2126 2140 499.0
C 3 233 190125 376.73 2126 2140 499.0
C 0 207 31240 58.32 2126 2140 499.0
D 8 195 993153 1925.96 2155 2100 514.6
D 7 80 557726 1079.77 2155 2100 514.6
D 1 52 375078 724.83 2155 2100 514.6

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