ASTROSAT CZTI

Data Quality Report

Orbit 21794

Creation date: 2024-06-27T18:32:17.513695
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_006T01_9000003226_21794cztM0_level2.evt modeM0/AS1A07_006T01_9000003226_21794cztM0_level2_quad_clean.evt
Size (bytes)397,157,76062,458,560
Size378.8 MB 59.6 MB
Events in quadrant A2,425,027392,553
Events in quadrant B2,566,060398,479
Events in quadrant C2,406,231382,714
Events in quadrant D4,281,551357,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106631
B0109651
C0105951
D0161551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5136300.584112%
B5136430.837227%
C5137450.875998%
D51373005.839984%

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 6196 5137 0 0 0.00% 0.00%
B 6196 5137 8 8 0.13% 0.16%
C 6197 5138 0 0 0.00% 0.00%
D 6197 5138 303 303 4.89% 5.90%

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 13 252 21724 167.35 620 608 126.2
A 13 254 9940 73.96 620 608 126.2
A 14 235 7880 57.63 620 608 126.2
B 3 64 40107 327.58 622 608 120.6
B 0 190 30929 251.46 622 608 120.6
B 0 189 17080 136.61 622 608 120.6
C 14 238 94224 670.71 591 593 139.6
C 10 22 4387 27.17 591 593 139.6
C 13 61 4125 25.3 591 593 139.6
D 7 238 1691871 11646.4 589 570 145.2
D 1 52 176915 1214.32 589 570 145.2
D 13 153 84501 577.95 589 570 145.2

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