ASTROSAT CZTI

Data Quality Report

Orbit 35352

Creation date: 2022-04-13T09:43:50.926333
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/AS1A11_093T01_9000005064_35352cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35352cztM0_level2_quad_clean.evt
Size (bytes)465,880,32063,927,360
Size444.3 MB 61.0 MB
Events in quadrant A2,870,416391,285
Events in quadrant B3,563,907388,727
Events in quadrant C3,229,490396,251
Events in quadrant D4,068,229370,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120773
B0141392
C0128312
D0157392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5560951.708633%
B55602684.820144%
C55601162.086331%
D55601963.525180%

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 7293 5561 64 64 0.88% 1.15%
B 7293 5561 162 162 2.22% 2.91%
C 7293 5561 104 104 1.43% 1.87%
D 7293 5561 183 183 2.51% 3.29%

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 15 169 233143 1807.89 637 625 128.6
A 10 83 112654 871.06 637 625 128.6
A 9 143 37722 288.44 637 625 128.6
B 5 236 637758 5324.13 625 608 119.7
B 5 172 383447 3199.07 625 608 119.7
B 4 232 31081 254.64 625 608 119.7
C 0 10 322436 2275.46 617 620 141.4
C 15 214 228111 1608.52 617 620 141.4
C 1 23 175913 1239.44 617 620 141.4
D 7 80 539959 3627.12 616 600 148.7
D 8 195 384688 2582.94 616 600 148.7
D 12 235 186856 1252.55 616 600 148.7

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