ASTROSAT CZTI

Data Quality Report

Orbit 25498

Creation date: 2024-06-27T19:18:20.324647
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/AS1A08_003T17_9000003720_25498cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25498cztM0_level2_quad_clean.evt
Size (bytes)1,500,595,200236,073,600
Size1.4 GB 225.1 MB
Events in quadrant A8,716,2441,523,720
Events in quadrant B13,486,3381,463,711
Events in quadrant C8,880,9601,465,348
Events in quadrant D13,107,0271,414,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382310
B0521320
C0384040
D0518100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185951270.682979%
B1859615908.550226%
C185962471.328243%
D185964312.317703%

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 20390 18599 0 0 0.00% 0.00%
B 20391 18600 1088 1088 5.34% 5.85%
C 20391 18600 2 2 0.01% 0.01%
D 20391 18600 210 210 1.03% 1.13%

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 13 254 29126 59.12 2258 2210 455.3
A 3 137 21281 41.89 2258 2210 455.3
A 0 226 19222 37.37 2258 2210 455.3
B 3 64 4769126 11487.32 2170 2118 415.0
B 3 112 97028 228.71 2170 2118 415.0
B 12 111 51646 119.35 2170 2118 415.0
C 14 238 342038 670.49 2162 2177 506.9
C 2 16 62495 119.0 2162 2177 506.9
C 5 112 17666 30.56 2162 2177 506.9
D 8 195 1808111 3403.82 2179 2117 530.6
D 1 52 1439786 2709.63 2179 2117 530.6
D 7 238 705265 1325.25 2179 2117 530.6

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