ASTROSAT CZTI

Data Quality Report

Orbit 11852

Creation date: 2024-06-27T16:19:08.577378
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/AS1A04_088T03_9000001750_11852cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11852cztM0_level2_quad_clean.evt
Size (bytes)442,768,320102,582,720
Size422.3 MB 97.8 MB
Events in quadrant A3,236,706676,670
Events in quadrant B3,610,472681,867
Events in quadrant C2,904,291673,402
Events in quadrant D3,231,059636,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138993
B0151242
C0130422
D0142082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277480.764697%
B62771682.676438%
C6277240.382348%
D6277811.290425%

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 7488 6279 1 1 0.01% 0.02%
B 7488 6279 69 69 0.92% 1.10%
C 7488 6279 0 0 0.00% 0.00%
D 7488 6279 38 38 0.51% 0.61%

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 1 162 125574 817.74 759 746 152.6
A 1 178 64134 415.25 759 746 152.6
A 1 161 56853 367.55 759 746 152.6
B 4 239 459299 3214.02 758 740 142.7
B 15 204 45434 313.25 758 740 142.7
B 10 245 39147 269.19 758 740 142.7
C 13 61 5480 27.53 745 751 171.8
C 3 202 1864 6.48 745 751 171.8
C -1 -1 -1 -1.0 745 751 171.8
D 1 52 105851 604.82 729 707 173.8
D 13 104 86075 491.06 729 707 173.8
D 13 122 83960 478.89 729 707 173.8

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