ASTROSAT CZTI

Data Quality Report

Orbit 32935

Creation date: 2024-06-27T20:43:39.499292
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/AS1C07_005T01_9000004748_32935cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32935cztM0_level2_quad_clean.evt
Size (bytes)476,953,920104,641,920
Size454.9 MB 99.8 MB
Events in quadrant A2,625,946710,457
Events in quadrant B3,751,363699,197
Events in quadrant C2,841,595712,606
Events in quadrant D4,842,246651,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114903
B0147342
C0122402
D0182002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5651100.176960%
B56513776.671386%
C56511162.052734%
D56514748.387896%

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 7143 5652 4 4 0.06% 0.07%
B 7143 5652 241 241 3.37% 4.26%
C 7143 5652 88 88 1.23% 1.56%
D 7143 5652 382 382 5.35% 6.76%

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 11 29 55067 415.62 649 635 131.0
A 0 191 25309 188.4 649 635 131.0
A 13 6 13708 99.82 649 635 131.0
B 5 172 905199 7590.38 632 616 119.2
B 0 199 91041 758.76 632 616 119.2
B 0 189 69392 577.1 632 616 119.2
C 0 10 310244 2139.6 630 634 144.7
C 1 241 26986 182.11 630 634 144.7
C 3 233 12887 84.68 630 634 144.7
D 12 233 939430 6154.05 608 593 152.6
D 8 195 810000 5305.64 608 593 152.6
D 2 250 210497 1375.91 608 593 152.6

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